EXHIBIT 10.1

                               FOURTH AMENDMENT


            FOURTH AMENDMENT, dated as of April 30, 1999 (this "FOURTH
AMENDMENT"), to the Amended and Restated Credit Agreement (as amended,
supplemented or otherwise modified from time to time), dated as of May 22, 1998
(the "CREDIT AGREEMENT"), among The Meridian Resource Corporation, a Texas
corporation (the "BORROWER"), the several lenders from time to time parties
thereto (the "LENDERS"), The Chase Manhattan Bank, as the Administrative Agent
for the Lenders (in such capacity, the "ADMINISTRATIVE AGENT"), Toronto Dominion
(Texas), Inc. and Mees Pierson N.V., as co-arrangers (each in such capacity, a
"CO-ARRANGER"), and Toronto Dominion (Texas), Inc., as documentation agent (in
such capacity, the "DOCUMENTATION AGENT").


                             W I T N E S S E T H:


            WHEREAS, the Borrower, the Lenders and the Administrative Agent are
parties to the Credit Agreement; and

            WHEREAS, the Borrower has requested, and the Administrative Agent
and the Lenders have agreed to certain modifications as set forth herein;

            NOW, THEREFORE, in consideration of the premises and of the mutual
agreements herein contained, the parties hereto hereby agree as follows:

            1. DEFINED TERMS. Terms defined in the Credit Agreement and used
herein shall, unless otherwise indicated, have the meanings given to them in the
Credit Agreement.

            2. AMENDMENTS TO SUBSECTION 1.1 OF THE CREDIT AGREEMENT. (a)
Subsection 1.1 of the Credit Agreement is hereby amended by deleting therefrom
the definitions of "Applicable Margin" "Borrowing Base" and "Commitment Fee
Rate" contained therein in their entirety and substituting in lieu thereof the
following definitions:

            "APPLICABLE MARGIN": for any day with respect to Eurodollar Loans
      and ABR Loans, the applicable per annum rate set forth below opposite the
      Borrowing Base Usage in effect on such day:

  BORROWING         EURODOLLAR         ABR
 BASE USAGE           MARGIN          MARGIN
 ----------         ----------        ------
Greater than             1.25%           .25%
Less than or             1.00%             0%
equal to 33%

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Greater than             1.25%           .25%
33% and less
than or equal
to 66%
Greater than             1.50%           .50%
66% and less
than 80%
Equal to or              2.25%          1.25%
greater than
80% and less
than 90%
Equal to or              2.50%          1.50%
greater than
90%          

            PROVIDED if there is no Borrowing Base Deficiency on the effective
            date of the Applicable Redetermination (after giving effect thereto,
            or if there is such a Borrowing Base Deficiency, such deficiency is
            cured within 30 days, as contemplated herein), then commencing on
            the later of such effective date or cure date, if applicable, the
            Applicable Margin thereafter, for any day with respect to Eurodollar
            Loans and ABR Loans shall be the applicable per annum rate set forth
            below opposite the Borrowing Base Usage in effect on any such day:


  BORROWING         EURODOLLAR         ABR
 BASE USAGE           MARGIN          MARGIN
 ----------         ----------        ------
Less than or              1.00%            0%
equal to 33%
Greater than              1.25%          .25%
33% and less
than or equal
to 66%
Greater than                               
66%                       1.50%          .50%

            As used herein, "BORROWING BASE USAGE" on any day means the
            percentage equivalent to the ratio of (i) the sum of the aggregate
            principal amount of the Loans then outstanding and Letter of Credit
            Outstandings on such day to (ii) the Borrowing Base in effect on
            such day.

                                                                               3

            "BORROWING BASE": at any time of determination, the amount then in
      effect as determined in accordance with subsection 4.9; PROVIDED, HOWEVER,
      that until the Applicable Redetermination, the Borrowing Base shall be
      $250,000,000.

            "COMMITMENT FEE RATE": for any day, a rate per annum equal to (a)
       .30% if the Borrowing Base Usage in effect on such day is less than or
       equal to 33%, (b) .375% if the Borrowing Base Usage in effect on such day
       is greater than 33% and less than 80% and (c) .50% if the Borrowing Base
       Usage in effect on such day is equal to or greater than 80%; PROVIDED
       that if there is no Borrowing Base Deficiency on the effective date of
       the Applicable Redetermination (after giving effect thereto, or if there
       is such a Borrowing Base Deficiency, such deficiency is cured within 30
       days, as contemplated herein), then commencing on the later of such
       effective date or cure date, if applicable, the Commitment Fee Rate
       thereafter for any day shall be a rate per annum equal to (a) .30% if the
       Borrowing Base Usage in effect on such day is less than or equal to 33%
       and (b) .375% if the Borrowing Base Usage in effect on such day is
       greater than 33%.

            (b) Subsection 1.1 of the Credit Agreement is hereby amended by
deleting the definition of "March '99 Redetermination" and adding thereto the
following new definitions in alphabetical order:

            "APPLICABLE REDETERMINATION": the August `99 Redetermination unless
      the Special Redetermination shall occur as provided in subsection 4.9(f)
      in which case the Applicable Redetermination shall be the Special
      Redetermination.

            "AUGUST '99 REDETERMINATION": the redetermination of the Borrowing
      Base scheduled for August 23, 1999, pursuant to subsection 4.9(c),
      utilizing the June 30, 1999 Reserve Report, which is required to be
      delivered prior to July 30, 1999.

            "JUNE 30, 1999 RESERVE REPORT": a Reserve Report prepared by the
      Borrower, dated as of June 30, 1999.

            "SPECIAL REDETERMINATION":  as defined in subsection 4.9(f).

            3. AMENDMENTS TO SUBSECTION 4.9. Subsection 4.9 of the Credit
Agreement is hereby amended by deleting such subsection in its entirety and
substituting in lieu thereof the following:

            "4.9 COMPUTATION OF BORROWING BASE. (a) BORROWING BASE. (i) The
      Borrowing Base in effect from time to time shall represent the maximum
      principal amount (subject to the aggregate amount of the Revolving Credit
      Commitments) of Loans and Letter of Credit Outstandings that the Lenders
      will allow to remain outstanding during the Commitment Period. The
      Borrowing Base will be based upon the value of certain Proved Reserves
      attributable to the Oil and Gas Properties of the Borrower and its
      Subsidiaries and other assets of the Borrower and its Subsidiaries
      acceptable to the Administrative

                                                                               4

      Agent in its sole discretion, and will be determined by the Administrative
      Agent in accordance with paragraph (d) of this subsection 4.9, subject to
      approval by the Supermajority Lenders (or, with respect to the Applicable
      Redetermination, all of the Lenders). Until the Commitments are no longer
      in effect, all Letters of Credit have terminated and all of the Loans and
      all other obligations under this Agreement are paid in full, this
      Agreement shall be subject to the then effective Borrowing Base.

            (b) RESERVE REPORTS. Except as provided below with respect to the
      August '99 Redetermination, prior to March 1 and September 1 of each year,
      the Borrower shall, at its own expense, furnish to the Administrative
      Agent and to each Lender Reserve Reports, which Reserve Reports shall be
      dated as of the immediately preceding December 31 (in the case of Reserve
      Reports due on March 1) and June 30 (in the case of Reserve Reports due on
      September 1), and shall set forth, among other things, (i) the Oil and Gas
      Properties, then owned by the Borrower and its Subsidiaries, (ii) the
      Proved Reserves attributable to such Oil and Gas Properties and (iii) a
      projection of the rate of production and net income of the Proved Reserves
      as of the date of such Reserve Report, all in accordance with the
      guidelines published by the Securities and Exchange Commission and such
      assumptions as the Administrative Agent shall provide. In connection with
      the August '99 Redetermination, the June 30, 1999 Reserve Report normally
      due to be delivered prior to September 1, 1999 shall be delivered prior to
      July 30, 1999. Concurrently with the delivery of the Reserve Reports, the
      Borrower shall furnish to the Administrative Agent and to each Lender a
      certificate of a Responsible Officer showing any additions to or deletions
      from the Oil and Gas Properties listed in the Reserve Report, which
      additions or deletions were made by the Borrower and its Subsidiaries
      since the date of the previous Reserve Report.

            (c) REDETERMINATIONS OF THE BORROWING BASE. The Borrowing Base shall
      be redetermined (i) after receipt by the Administrative Agent of each
      scheduled Reserve Report, commencing with the June 30, 1999 Reserve
      Report, (ii) upon the delivery of a Lender Redetermination Notice (which
      shall not be delivered until after the Applicable Redetermination) to the
      Borrower and (iii) upon the delivery of a Borrower Redetermination Notice
      (which, except as provided in paragraph (f) below, shall not be delivered
      until after the Applicable Redetermination) to the Administrative Agent,
      all as provided in this subsection 4.9. Within 15 days after the delivery
      of a Borrower Redetermination Notice or a Lender Redetermination Notice,
      the Borrower shall furnish to the Administrative Agent and to each Lender
      a Reserve Report as of the most recent practicable date. If the Borrower
      fails to deliver a Reserve Report within the time period provided for in
      the preceding sentence, then the Administrative Agent shall have the right
      to rely on the last Reserve Report previously delivered by the Borrower
      with any such adjustments and taking into account any additional
      information as the Administrative Agent may deem appropriate, in its sole
      discretion. Other than in connection with the August '99 Redetermination
      or the Special Redetermination, on or before the date which is 30 days
      after receipt (i) of a scheduled semi-annual Reserve Report or (ii) of a
      Reserve Report in connection with a Lender Redetermination Notice or a
      Borrower

                                                                               5

      Redetermination Notice, the Administrative Agent shall redetermine the
      Borrowing Base in its sole discretion, and the Administrative Agent shall
      notify the Borrower and the Lenders of its redetermination of the
      Borrowing Base. In connection with the August '99 Redetermination, the
      Administrative Agent shall redetermine the Borrowing Base by August 13,
      1999 provided the June 30, 1999 Reserve Report has been received by it no
      later than July 30, 1999. In connection with a Special Redetermination,
      the Administrative Agent shall redetermine the Borrowing Base within 14
      days of receipt from the Borrower of the Reserve Report to be used in
      connection therewith. Within 10 days after receipt from the Administrative
      Agent of the amount of its redetermination of the Borrowing Base, each
      Lender shall notify the Administrative Agent stating whether or not such
      Lender agrees with that redetermination. Failure of any Lender to give
      such notice within such period of time shall be deemed to constitute an
      acceptance of such redetermination. If the Supermajority Lenders (or, with
      respect to the Applicable Redetermination, all of the Lenders) agree with
      that redetermination, then the Administrative Agent promptly shall notify
      the Borrower of the Borrowing Base as so redetermined, whereupon that
      redetermined value shall automatically become effective (and shall remain
      effective until the Borrowing Base is again redetermined as provided in
      this subsection 4.9(c)). If the Supermajority Lenders (or, with respect to
      the Applicable Redetermination, all of the Lenders) have not approved or
      are not deemed to have approved the Borrowing Base within the 10 day
      period following their receipt of the proposed amount from the
      Administrative Agent, the Borrowing Base shall be set at the amount of the
      then current Borrowing Base and the Borrowing Base shall remain at such
      level until the Supermajority Lenders (or, with respect to the Applicable
      Redetermination, all of the Lenders), utilizing the procedure outlined
      herein, agree on a new Borrowing Base. Each redetermination provided for
      by this subsection 4.9(c) shall be made in accordance with the provisions
      of subsection 4.9(d). Other than in connection with the Applicable
      Redetermination, it is the intention of the Borrower and the Lenders that
      the Borrowing Base be redetermined within 45 days after the furnishing of
      each Reserve Report, subject to the provisions of this paragraph (c).

            (d) CRITERIA. (i) All determinations and redeterminations by the
      Administrative Agent provided for in this subsection 4.9 (and any
      determinations and decisions by either or both of the Administrative Agent
      and the Supermajority Lenders (or, with respect to the Applicable
      Redetermination, all of the Lenders) in connection therewith, including
      effecting any redetermination of the value of any component contained in a
      Reserve Report) shall be made by the Administrative Agent and the Lenders
      in their sole discretion and shall be made on a reasonable basis and in
      good faith based upon the application by the Administrative Agent and the
      Lenders of their respective normal oil and gas lending criteria as they
      exist at the time of determination.

            (ii) All redeterminations of the Borrowing Base referred to in this
      subsection 4.9 shall become effective immediately upon the delivery of
      notice by the Administrative Agent to the Borrower of the redetermination.

                                                                               6

            (iii) Upon the issuance of any Subordinated Indebtedness, the
      Borrowing Base shall be redetermined in accordance with the procedures set
      forth in subsection 4.9 which would have applied had a Borrower
      Redetermination Notice or a Lender Redetermination Notice been delivered.

            (e) TITLE. Concurrently with the delivery to the Administrative
      Agent of each Reserve Report, the Administrative Agent may request that
      the Borrower furnish to the Administrative Agent reasonable evidence of
      the Borrower's title to the Oil and Gas Properties which have been
      developed or acquired by the Borrower subsequent to the Reserve Report
      immediately preceding such Reserve Report.

            (f) SPECIAL REDETERMINATION. On or before the August '99
      Redetermination the Borrower may request a special redetermination of the
      Borrowing Base by delivering a Borrowing Redetermination Notice and a
      Reserve Report both as required by subsection 4.9(c) hereof. Such special
      redetermination of the Borrowing Base shall become effective if it is
      approved by all the Lenders and if, upon the effectiveness thereof, no
      Borrowing Base Deficiency exists (such a special redetermination being
      herein referred to as, the "SPECIAL REDETERMINATION"). If the Special
      Redetermination becomes effective prior to July 15, 1999, then subsection
      7.12(b)(i) hereof shall cease to be in effect. The occurrence of the
      Special Redetermination shall eliminate the need for the August '99
      Redetermination and the next scheduled Borrowing Base redetermination will
      be in connection with the December 31, 1999 Reserve Report."

            4. AMENDMENTS TO SECTION 4.10. Subsection 4.10 of the Credit
Agreement is hereby amended by deleting such subsection in its entirety, and
substituting in lieu thereof, the following:

            "4.10 BORROWING BASE COMPLIANCE. If, upon any redetermination of the
      Borrowing Base pursuant to subsection 4.9(c) other than in connection with
      the issuance of Subordinated Indebtedness provided for in subsection
      8.2(f), the Aggregate Revolving Credit Exposure of the Lenders exceeds the
      Borrowing Base then in effect (any such excess, the "BORROWING BASE
      DEFICIENCY"), the Borrower shall prepay the Revolving Credit Loans and
      then to the extent necessary, cash collateralize the Letter of Credit
      Outstandings in an amount equal to at least 50% of the Borrowing Base
      Deficiency within 90 days after the effective date of the redetermination
      resulting in such Borrowing Base Deficiency, and within the next 90 days
      prepay the Revolving Credit Loans and then cash collateralize the Letter
      of Credit Outstandings in an amount equal to the balance of such Borrowing
      Base Deficiency in each case together with interest accrued to the date of
      such payment or prepayment and any amounts payable under subsection 4.14;
      PROVIDED that, if there exists a Borrowing Base Deficiency upon the
      effectiveness of the Applicable Redetermination, the Borrower shall within
      30 days of the effectiveness of the Applicable Redetermination, prepay the
      Revolving Credit Loans and then cash collateralize the Letter of Credit
      Outstandings (together with interest accrued to the date of such payment
      or prepayment and any amounts payable under subsection 4.14) in an amount
      equal to

                                                                               7

      such Borrowing Base Deficiency. If at any other time there exists a
      Borrowing Base Deficiency (including as a result of a redetermination in
      connection with the incurrence of Subordinated Indebtedness provided for
      in subsection 8.2(f)), the Borrower shall immediately prepay the Revolving
      Credit Loans and then to the extent necessary, cash collateralize the
      Letter of Credit Outstandings in an amount equal to 100% of such Borrowing
      Base Deficiency together with (i) interest accrued to the date of such
      payment or prepayment and (ii) any amounts payable under subsection 4.14.
      Notwithstanding the foregoing, the Borrower shall immediately apply 100%
      of the Net Proceeds of any Redetermination Event described in clauses (a),
      (b), (c) or (d) of the definition thereof to prepay outstanding Loans and
      then cash collateralize the Letter of Credit Outstandings. Prepayments and
      collateralization pursuant to this subsection 4.10 shall be made as set
      forth in subsection 4.5(c)."

            5. AMENDMENT TO SUBSECTION 7.2. Subsection 7.2 of the Credit
Agreement is hereby amended by deleting the words "January 15, 1999" from clause
"(f)" thereof and substituting in lieu thereof the words "July 15, 1999".

            6. AMENDMENTS TO SECTION 7.11. Subsection 7.11 of the Credit
Agreement is hereby amended by deleting such subsection in its entirety and
substituting in lieu thereof the following:

            "7.11 FURTHER ASSURANCES. Upon the request of the Administrative
      Agent, promptly perform or cause to be performed any and all acts and
      execute or cause to be executed any and all documents (including, without
      limitation, financing statements and continuation statements) for filing
      under the provisions of the Uniform Commercial Code or any other
      Requirement of Law which are necessary or advisable to maintain in favor
      of the Administrative Agent, for the benefit of the Lenders, Liens on the
      Pledged Securities and on the Oil and Gas Properties subject to the
      Mortgages that are duly perfected in accordance with all applicable
      Requirements of Law; PROVIDED that the Liens created by the Mortgages
      shall be released after the effectiveness of the Applicable
      Redetermination, (pursuant to documentation reasonably satisfactory to the
      Administrative Agent) if (x) upon redetermination of the Borrowing Base in
      connection with the Applicable Redetermination it is determined that there
      is no Borrowing Base Deficiency, or if there is such a Borrowing Base
      Deficiency, such deficiency is cured within 30 days, (y) at such time no
      Default or Event of Default has occurred and is continuing and (z) unless
      the Special Redetermination is applicable, the June 30, 1999 Reserve
      Report was delivered by the Borrower to the Administrative Agent by July
      30, 1999."

            7. AMENDMENT TO SECTION 7.12. Subsection 7.12 of the Credit
Agreement is hereby amended by deleting paragraph (b) thereof in its entirety
and substituting in lieu thereof the following:

            "(b) The Borrower hereby directs the Administrative Agent to file
      and record the Additional Mortgage in all filing offices as the
      Administrative Agent deems appropriate

                                                                               8

      upon the occurrence of any of the following events (and the Administrative
      Agent and the Lenders agree not to file or record the Additional Mortgage
      until the occurrence of any of the following events):

            (i) the Borrower fails to deliver the certificate required by
      subsection 7.2(f) by July 15, 1999 or if the Borrower delivers such
      certificate, subsequent information is received by the Borrower or the
      Administrative Agent which demonstrates to the reasonable satisfaction of
      the Administrative Agent that the Borrower is not in compliance with
      subsection 8.1(d), (e), or (f); or

            (ii) if the Special Redetermination has not occurred and Borrower
      fails to deliver the June 30, 1999 Reserve Report to the Administrative
      Agent by July 30, 1999 or if upon redetermination of the Borrowing Base in
      connection with the August `99 Redetermination, it is determined that a
      Borrowing Base Deficiency exists and the Borrower fails to cure such
      deficiency within 30 days of the effective date of the August `99
      Redetermination by prepaying the Revolving Credit Loans and/or cash
      collateralizing Letter of Credit Outstandings."

            8. AMENDMENTS TO SUBSECTION 8.1. (a) Subsection 8.1 of the Credit
Agreement is hereby amended by deleting clause (b) thereof and substituting in
lieu thereof the following:

            "(b) Total Debt Leverage Ratio. Permit (i) the ratio of Indebtedness
      of the Borrower and its Subsidiaries, as of the last day of the fiscal
      quarters ending September 30, 1998 and December 31, 1998, to EBITDA, for
      the period of four consecutive fiscal quarters then ended, to be greater
      than 3.25 to 1.0, (ii) the ratio of Indebtedness of the Borrower and its
      Subsidiaries, as of the last day of the fiscal quarters ending March 31,
      1999 and June 30, 1999, to EBITDA, for the period of four consecutive
      fiscal quarters then ended, to be greater than 4.0 to 1.0, (iii) the ratio
      of Indebtedness of the Borrower and its Subsidiaries, as of the last day
      of the fiscal quarter ending September 30, 1999, to EBITDA, for the period
      of four consecutive fiscal quarters then ended, to be greater than 3.50 to
      1.0, or (iv) the ratio of Indebtedness of the Borrower and its
      Subsidiaries, as of the last day of any fiscal quarter thereafter
      (commencing December 31, 1999), to EBITDA, for the period of four
      consecutive fiscal quarters then ended, to be greater than 3.25 to 1.0."

            (c) Subsection 8.1 of the Credit Agreement is hereby amended by
      deleting paragraphs (d), (e) and (f) thereof in their entirety and
      substituting in lieu thereof the following:

            "(d) Average Daily Production. Permit the average daily production
      of the Proved Reserves of the Borrower and its Subsidiaries for the
      calendar month ending June 30, 1999 to be less than 150 MMCFE/D.

                                                                               9

            (e) Proved Reserves. Permit the aggregate Proved Reserves of the
      Borrower and its Subsidiaries as of June 30, 1999 to be less than 325
      BCFE.

            (f) Working Capital. Permit the Consolidated Working Capital as at
      June 30, 1999 to be less than negative $10,000,000."

            9. WAIVER OF SUBSECTION 4.9(B) OF THE CREDIT AGREEMENT. The
Administrative Agent and the Required Lenders hereby waive any Default or Event
of Default which may have occurred as a result of the receipt of a Reserve
Report dated March 31, 1999 furnished by the Borrower on March 25, 1999 in lieu
of the Reserve Report scheduled to be dated December 31, 1998 and furnished by
the Borrower prior to March 1, 1999 and as a result of the Borrowing Base not
being redetermined as provided in subsection 4.9 (as in effect prior to the
effectiveness of this Fourth Amendment).

            10. CONDITIONS TO EFFECTIVENESS. The amendments and changes provided
for in this Fourth Amendment shall become effective on the date (the "FOURTH
AMENDMENT EFFECTIVE DATE") upon which the following conditions precedent are
satisfied and the Administrative Agent notifies the Borrower and the Lenders of
the occurrence of the Fourth Amendment Effective Date:

            (a) the Administrative Agent shall have received counterparts of
      this Fourth Amendment, duly executed by the Borrower and the Lenders
      listed in the signature pages hereof;

            (b) the Administrative Agent shall have received counterparts of the
      Acknowledgment and Consent, confirming and agreeing that the Second
      Amended and Restated Guarantee, dated as of June 30, 1998, is and shall
      continue to be, in full force and effect, duly executed by the Guarantors
      attached hereto;

            (c) the Administrative Agent shall have received all fees and
      expenses required to be paid on or before the Fourth Amendment Effective
      Date; and

            (d) the Administrative Agent shall have received a copy of the
      resolutions, in form and substance satisfactory to the Administrative
      Agent, of the Board of Directors of each applicable Loan Party (other than
      the Borrower) and the executive committee of the Board of Directors of the
      Borrower authorizing (i) the execution, delivery and performance of this
      Fourth Amendment certified by its Secretary or Assistant Secretary as of
      the Fourth Amendment Effective Date, which certificate shall state that
      the resolutions thereby certified have not been amended, modified, revoked
      or rescinded as of the date of such certificate.

            11. REPRESENTATIONS AND WARRANTIES. The Borrower as of the date
hereof and after giving effect to the amendments contained herein, hereby (a)
represents and warrants to the Administrative Agent and each Lender that the
Additional Mortgage, together with the Existing

                                                                              10

Mortgage, when filed, shall give the Lenders a first lien on Proved Reserves of
the Borrower constituting at least 75% of the net present value of all the
Proved Reserves of the Borrower and its Subsidiaries as reflected in the Reserve
Report dated as of March 31, 1999, prepared by T. J. Smith & Company, Inc. and
delivered to the Lenders and (b) confirms, reaffirms and restates that (i)
representations and warranties made by it in Section 5 of the Credit Agreement
are true and correct on and as of the date hereof (except to the extent such
representations and warranties are stated to relate to a specific earlier date)
and (ii) no Default or Event of Default has occurred and is continuing on the
date hereof; PROVIDED, that each reference to the Credit Agreement therein shall
be deemed to be a reference to the Credit Agreement after giving effect to this
Fourth Amendment.

            12. PAYMENT OF EXPENSES. The Borrower agrees to pay or reimburse the
Administrative Agent for all of its out-of-pocket costs and reasonable expenses
incurred in connection with this Fourth Amendment, any other documents prepared
in connection herewith and the transactions contemplated hereby, including,
without limitation, the reasonable fees and disbursements of counsel to the
Administrative Agent.

            13. REFERENCE TO AND EFFECT ON THE LOAN DOCUMENTS; LIMITED EFFECT.
On and after the date hereof and the satisfaction of the conditions contained in
Section 7 of this Fourth Amendment, each reference in the Credit Agreement to
"this Agreement", "hereunder", "hereof" or words of like import referring to the
Credit Agreement, and each reference in the other Loan Documents to "the Credit
Agreement", "thereunder", "thereof" or words of like import referring to the
Credit Agreement, shall mean and be a reference to the Credit Agreement as
amended hereby. The execution, delivery and effectiveness of this Fourth
Amendment shall not, except as expressly provided herein, operate as a waiver of
any right, power or remedy of any Lender or the Agent under any of the Loan
Documents, nor constitute a waiver of any provisions of any of the Loan
Documents. Except as expressly amended herein, all of the provisions and
covenants of the Credit Agreement and the other Loan Documents are and shall
continue to remain in full force and effect in accordance with the terms thereof
and are hereby in all respects ratified and confirmed.

            14. COUNTERPARTS. This Fourth Amendment may be executed by one or
more of the parties hereto in any number of separate counterparts (which may
include counterparts delivered by facsimile transmission) and all of said
counterparts taken together shall be deemed to constitute one and the same
instrument. Any executed counterpart delivered by facsimile transmission shall
be effective as for all purposes hereof.

            15. SEVERABILITY. Any provision of this Fourth Amendment which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

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            16. INTEGRATION. This Fourth Amendment and the other Loan Documents
represent the agreement of the Loan Parties, the Administrative Agent and the
Lenders with respect to the subject matter hereof, and there are no promises,
undertakings, representations or warranties by the Administrative Agent or any
Lender relative to the subject matter hereof not expressly set forth or referred
to herein or in the other Loan Documents.

            17. GOVERNING LAW. THIS FOURTH AMENDMENT AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES UNDER THIS FOURTH AMENDMENT SHALL BE GOVERNED BY, AND
CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.


                 [Remainder of Page Intentionally Left Blank]

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            IN WITNESS WHEREOF, the parties hereto have caused this Fourth
Amendment to be duly executed and delivered by their respective proper and duly
authorized officers as of the day and year first above written.

THE MERIDIAN RESOURCE CORPORATION


                                             By: /s/ P RICHARD GESSINGER
                                             Title:_____________________________



THE CHASE MANHATTAN BANK, as
  Administrative Agent, Issuing Lender
  and as a Lender


                                             By: /s/ AUTHORIZED SIGNATORY
                                             Title:_____________________________

                                                                              13

TORONTO DOMINION (TEXAS), INC., as
  Arranger, Documentation Agent and as a
  Lender


                                             By: /s/ AUTHORIZED SIGNATORY
                                             Title:_____________________________


                                                                              14

SOCIETE GENERALE, SOUTHWEST AGENCY,
  as a Lender


                                             By: /s/ AUTHORIZED SIGNATORY
                                             Title:_____________________________


                                                                              15


NATIONSBANK, N.A., as a Lender


                                             By: /s/ AUTHORIZED SIGNATORY
                                             Title:_____________________________


                                                                              16

MEES PIERSON, N.V., as a Lender


                                             By: /s/ AUTHORIZED SIGNATORY
                                             Title:_____________________________


                                                                              17

MORGAN GUARANTY TRUST COMPANY OF
NEW YORK, as a Lender


                                             By: /s/ AUTHORIZED SIGNATORY
                                             Title:_____________________________


                                                                              18

                           ACKNOWLEDGMENT AND CONSENT

       Each of the undersigned corporations, as a guarantor under that certain
Second Amended and Restated Guarantee, dated as of June 30, 1998 (as amended,
supplemented or otherwise modified from time to time, the "GUARANTEE"), made by
each of such corporations in favor of the Administrative Agent, confirms and
agrees that the Guarantee is, and shall continue to be, in full force and effect
and is hereby ratified and confirmed in all respects and the Guarantee and all
of the Collateral (as defined in the Guarantee Agreement) do, and shall continue
to, secure the payment of all of the Obligations (as defined in the Guarantee)
pursuant to the terms of the Guarantee. Capitalized terms not otherwise defined
herein shall have the meanings assigned to them in the Credit Agreement referred
to in the Fourth Amendment to which this Acknowledgment and Consent is attached.


CAIRN ENERGY USA, INC.

                                             By:________________________________
                                             Title:_____________________________

Address for Notices:
15995 N. Barker's Landing, Suite 300
Houston, Texas 77079
Fax: (281) 558-5595


THE MERIDIAN RESOURCE &  EXPLORATION
COMPANY

                                             By:________________________________
                                             Title:_____________________________

Address for Notices:
15995 N. Barker's Landing, Suite 300
Houston, Texas 77079
Fax: (281) 558-5595


THE MERIDIAN PRODUCTION CORPORATION

                                             By:________________________________
                                             Title:_____________________________

Address for Notices:
15995 N. Barker's Landing, Suite 300
Houston, Texas 77079
Fax: (281) 558-5595

                                                                              19

THE MERIDIAN RESOURCES CORPORATION
(Delaware Subsidiary)

                                             By:________________________________
                                             Title:_____________________________

Address for Notices:
15995 N. Barker's Landing, Suite 300
Houston, Texas 77079
Fax: (281) 558-5595


LOUISIANA ONSHORE PROPERTIES, INC.

                                             By:________________________________
                                             Title:_____________________________

Address for Notices:
15995 N. Barker's Landing, Suite 300
Houston, Texas 77079
Fax: (281) 558-5595