Exhibit 10.1

                        SEPARATION AND RELEASE AGREEMENT


     This  Separation and Release  Agreement  ("Release  Agreement") is made and
entered into between  Abraxas  Petroleum  Corporation  ("Abraxas") and Robert W.
Carington, Jr., ("Carington") as follows:


                               W I T N E S S T H:


     WHEREAS,  Carington is presently  employed by Abraxas as its Executive Vice
President  pursuant to an Agreement  dated December 21, 1999 (the  "Agreement");
and


     WHEREAS,  Abraxas  and  Carington  desire to  amicably  end the  employment
relationship; and


     WHEREAS, there are disputes and disagreements  regarding Carington's rights
under the Agreement; and


     WHEREAS,  Carington and Abraxas  (hereinafter  together  referred to as the
"Parties")  want to avoid the  expense,  delay and  destruction  which  would be
caused by litigating their disputes; and


     WHEREAS,  the  Parties  desire  to reach an  amicable  resolution  to these
disputes; and


     WHEREAS, the Parties have agreed to the terms and conditions of Carington's
termination of employment; and


     WHEREAS,  in furtherance of such agreement,  the Parties have agreed to the
terms and conditions of this Release Agreement as set forth below;


     Therefore,  as material considerations and inducements to the execution and
delivery of this Release  Agreement and in  consideration of the mutual promises
set forth  herein and other good and  valuable  consideration,  the  receipt and
sufficiency  of which are hereby  acknowledged,  the  Parties  hereby  contract,
covenant, and agree as follows:

     1.  Separation from  Employment:  Carington's  termination  from employment
         with Abraxas  shall be  effective  as of October 14, 2005  (hereinafter
         referred  to  as  the  "Separation  Date").  On  the  Separation  Date,
         Carington's  status as an employee and officer of Abraxas will cease in
         its entirety.

     2.  Consideration:  Carington shall be paid the following as  consideration
         for entering into this Release Agreement:

     a.  Lump sum payment:  Wage  continuation  in the amount of Two Hundred and
         Thirty Five Thousand Dollars ($235,000) which shall be paid in one lump
         sum no sooner  than the eighth  (8th) day and no later than the twelfth
         (12th) day after Carington  executes and tenders this Release Agreement
         to Abraxas.  This payment shall be made by direct deposit in accordance
         with Abraxas' standard payroll practices.

     b.  401(k)  Match:  Abraxas  shall pay  Carington  any 401(k) match that it
         makes for its employees for 2005 at such times and from time to time as
         Abraxas makes such payments;


     c.  Annual  Bonus  Plan for  2005:  If,  as and when any  member  of Senior
         Management  of  Abraxas  receives  a bonus  for  calendar  year 2005 as
         provided  under the Annual Bonus Plan,  Abraxas agrees to pay Carington
         5/6ths of the bonus he would have received if he had remained  employed
         through  the end of 2005 and were an employee of Abraxas on the date of
         such payment, if any;

     d.  Unused Vacation and Expense Reimbursements.  Abraxas shall mail a check
         to  Carington's  home no sooner  than the 8th day and no later than the
         12th day after Carington  executes and delivers this Release  Agreement
         for four (4) days of accumulated  but unused vacation and the amount of
         any  outstanding  unpaid  reimbursable  business  expenses  incurred by
         Carington  through  the  Separation  Date that have been  incurred  and
         documented in accordance with Abraxas reimbursement policy.

     e.  Attorneys  Fees.  Abraxas  shall  pay  reasonable  attorneys  fees  and
         expenses  incurred  by you  in  connection  with  the  negotiation  and
         execution of this Release Agreement.

     f.  COBRA Payments:  If Carington elects COBRA coverage,  Abraxas shall pay
         his monthly COBRA  expenses  until the earlier of (i) the date on which
         it is determined  that no bonus is payable;  (ii) the date the bonus is
         actually paid under Paragraph 2 (c) of this Release Agreement; or (iii)
         the date on which Carington becomes eligible for coverage under another
         employer's plan.

     g.  Taxes and  withholding:  All  payments  made to  Carington  under  this
         Release  Agreement shall be less applicable tax withholding and payroll
         deductions,  with the  exception  of the  attorney's  fees  payment  in
         Paragraph (e) above.


     All of the  payments  delivered in (a) through (g) above are referred to as
     the   "Consideration".   Abraxas  is  not  obligated  to  pay  any  of  the
     Consideration  if Carington  revokes or breaches this Agreement.  Carington
     acknowledges  the sufficiency of the  Consideration as consideration to him
     for executing this Release Agreement and agreeing to be bound by its terms.
     Additionally,  Carington  acknowledges  that upon  payment  of the lump sum
     payment,  he will have  been  paid all  moneys  owed to him  related  to or
     resulting from his employment and/or the termination of his employment.

3.   Release

     a.  Release and Assignment of All Claims By Carington:  In consideration of
         Abraxas' agreement to provide the Consideration  described in Paragraph
         3  of  this  Release  Agreement,  Carington  his  heirs,  assigns,  and
         attorneys (collectively, the "Releasors"),  hereby releases and forever
         discharges  Abraxas and all of this entity's  past,  present and future
         officers, directors,  shareholders,  partners,  representatives,  board
         members,  subsidiaries,  parent companies,  related entities, insurance
         carriers,  agents,  servants,  employees,  successors,  assigns, heirs,
         legatees,  and attorneys  (the  "Released  Parties"),  from any and all
         claims, causes of action, lawsuits,  proceedings,  damages,  interests,
         benefits, and all other demands of any kind or character whatsoever, in
         law or in  equity,  in any way  directly  or  indirectly  related to or



         connected with his employment or separation therefrom with the Released
         Parties. This Release includes, without limitation, the following:

         i.    Claims related to Carington's  employment  and/or the termination
               of his employment,  including, without limitation, any allegation
               of a violation of any employment,  bonus,  or other  compensation
               agreement  with  Abraxas,  including,   without  limitation,  the
               Agreement;

         ii.   Claims   that  could  have  been   asserted   in  any  Charge  of
               Discrimination filed by him with the Equal Employment Opportunity
               Commission  and/or the Texas Workforce  Commission--Civil  Rights
               Division;

         iii.  Claims  arising under state or federal  constitution  or state or
               federal statute (including, without limitation, all tort claims),
               city ordinance, or public policy, including,  without limitation,
               the  Securities  Exchange Act of 1934,  as amended,  the Employee
               Retirement  Income  Security Act of 1974,  29 U.S.C.  ss. 1001 et
               seq. and claims involving employment discrimination,  harassment,
               and/or  retaliation of any form (including,  without  limitation,
               claims under the Age Discrimination in Employment Act of 1967, 29
               U.S.C. ss. 621 et seq., Title VII of the Civil Rights Act of 1964
               as amended,  42 U.S.C. ss. 2000e et seq., the Civil Rights Act of
               1870, 42 U.S.C. ss. 1981, the Americans with  Disabilities Act of
               1990, 42 U.S.C.  ss. 12101 et seq.,  the Family and Medical Leave
               Act of 1993,  29 U.S.C.  ss. 2601 et seq.,  the Equal Pay Act, 29
               U.S.C.  ss. 206, the Texas  Commission  on Human Rights Act, Tex.
               Lab.  Code Ann.  ss.  21.001 et seq.,  and/or the Texas  Workers'
               Compensation Act, Tex. Lab. Code ss. 451.001 et seq.);

         iv.   Claims arising under state or federal  contract,  tort, or common
               law,  including,  without  limitation,  any  claim of  breach  of
               contract,  promissory estoppel,  detrimental  reliance,  wrongful
               discharge,  false  imprisonment,  assault,  battery,  intentional
               infliction of emotional  distress,  defamation,  slander,  libel,
               fraud, invasion of privacy,  breach of the covenant of good faith
               and fair  dealing,  breach of  fiduciary  duty,  conversion,  and
               tortious interference with any type of third-party  relationship,
               as well as any and all  damages  that may  arise  out of any such
               claims, including, without limitation,  claims for economic loss,
               lost profits, loss of capital, lost wages, lost earning capacity,
               emotional distress, mental anguish,  personal injuries,  punitive
               damages, or any future damages;

         v.    Claims of retaliation of any nature,  including,  but not limited
               to, the anti-retaliatory  provisions of the statues identified in
               Paragraph 3(a)(iii) of this Release Agreement; and

         vi.   CLAIMS OF NEGLIGENCE OF ANY KIND, INCLUDING,  WITHOUT LIMITATION,
               GROSS  NEGLIGENCE  AGAINST  ABRAXAS  BASED  UPON  THE  ACTION  OR
               INACTION OF ABRAXAS.



               The  claims   described  in   Paragraph   4(a)  through  (f)  are
               hereinafter  collectively  referred  to  as  the  "Claims."  This
               Release  Agreement  may be pleaded as, and shall  constitute,  an
               absolute and final bar to any and all lawsuits or  administrative
               claims now pending,  or that may hereafter be filed or prosecuted
               by Releasors against the Released Parties that arose out of or in
               connection with any of the Claims. Additionally, Carington agrees
               that at no  time  subsequent  to the  execution  of this  Release
               Agreement will he permit the filing or maintenance, in any state,
               federal, or foreign court, or before any local,  state,  federal,
               or foreign  administrative  agency, or any other tribunal, of any
               charge, claim, or action of any kind arising out of or in any way
               related to any of the Claims. Finally, it is the intention of the
               Parties this Release  Agreement shall be construed as broadly and
               all-encompassing  as permitted  by law and that,  notwithstanding
               such intention, if it is found that any claim of any kind has not
               been  released,  Carington  agrees  that any such claim is hereby
               assigned to Abraxas.  Notwithstanding  the  foregoing  release of
               Claims,  Abraxas shall continue in effect for Carington's benefit
               all insurance or other provisions for indemnification and defense
               of officers and  directors of Abraxas  which are in effect on the
               Separation  Date with respect to all acts and omissions  while an
               officer or director  as fully and  completely  as if  Carington's
               employment had not terminated,  and until the final expiration or
               running of all periods of limitation against actions which may be
               applicable to such acts or omissions.

               b.  Limited Release by Abraxas:  In  consideration of Carington's
                   termination of his employment,  and in further  consideration
                   of his  execution of this  Release  Agreement,  Abraxas,  its
                   past, present and future officers,  directors,  shareholders,
                   partners,   representatives,   board  members,  subsidiaries,
                   parent  companies,   related  entities,  insurance  carriers,
                   agents,  servants,  employees,  successors,  assigns,  heirs,
                   legatees, and attorneys, hereby release Carington and forever
                   discharge  him from any and all  claims  or  causes of action
                   which it or any of them may have  against  him arising out of
                   or relating in any manner  whatsoever to his employment  with
                   Abraxas, except for breaches of fiduciary duty, violations of
                   securities laws or fraud.

         4.    Continuing Health Care Benefits - COBRA: A "qualifying event" for
               purposes of the Consolidated Omnibus Benefits Reconciliation Act,
               as amended (hereinafter referred to as "COBRA"),  shall be deemed
               to have occurred on the Separation Date.  Carington shall receive
               information  under  separate  cover  from the Plan  Administrator
               regarding his on-going rights under COBRA.

         5.    No  Future  Employment:  Carington  agrees  that  Abraxas  has no
               obligation,  contractual or otherwise,  to employ Carington as an
               employee of the Company in the future.  Carington  hereby  waives
               any right to future employment as an employee of Abraxas.

         6.    Non-Disparagement:  Carington  agrees  that  he  shall  not  make
               derogatory  or  disparaging   remarks  regarding   Abraxas,   his
               employment  with Abraxas,  or his separation from employment with
               Abraxas  unless  compelled  to do so by  subpoena  or court order
               following  written  notice by Carington to Abraxas as provided in
               this Release Agreement.  Carington  acknowledges and understands,
               however,  that none of the  provisions of this Release  Agreement
               require  him to alter or change his  testimony,  if any should be



               required by subpoena or court order,  for the benefit of Abraxas.
               Abraxas agrees to provide a neutral  reference in response to any
               inquiries regarding Carington's employment.

         7.    Stock Options:  In consideration of the execution and delivery of
               this Release Agreement,  Abraxas and Carington agree to amend the
               terms  of  all  stock  option  agreements   between  Abraxas  and
               Carington to provide (i) that Carington may exercise such options
               until the date that is 90 days from and after the Separation Date
               and (ii)  that  all such  options  shall  be  deemed  to be fully
               vested.

         8.    No Admission of Wrongdoing:  Both parties  acknowledge  and agree
               that  this  Release  Agreement  shall  not  be  construed  as  an
               admission by the other of any act of  wrongdoing,  liability,  or
               responsibility for any wrongdoing of any kind.

         9.    Taxation Consequences and Indemnity:  Carington  acknowledges and
               agrees that he has requested  that the  Consideration  be paid in
               the manner  described in  Paragraph 2 of this Release  Agreement.
               Carington  further  acknowledges and agrees that Abraxas has made
               no  representations  to him regarding the taxation of any portion
               of the  Consideration.  Carington  also  understands  that  he is
               solely  responsible for the payment of all taxes, if any, related
               to the  Consideration  and that Abraxas has no duty to defend him
               against any such claims. Additionally,  Carington understands and
               agrees that the  appropriate  Internal  Revenue  Service  form(s)
               shall be issued to him for the full amount of the  Consideration.
               Finally,  Carington  understands  and agrees  that he shall fully
               indemnify  Abraxas for any claims  brought by taxing  authorities
               against  Abraxas  seeking  payment  of taxes,  penalties,  and/or
               interest  related  in any way to the  assessment,  determination,
               and/or reporting of taxes under federal, state, and/or local law.
               This agreement to indemnify Abraxas includes the agreement to pay
               all  attorneys'  fees and other costs that Abraxas may reasonably
               incur in the defense of such claims; additionally,  the choice of
               counsel to  represent  Abraxas in any such  proceedings  to which
               this  agreement  to  indemnify  applies  shall at all times  rest
               within the sole discretion of Abraxas. Finally,  Carington agrees
               that, if requested by Abraxas at any time following his execution
               of this Release Agreement, he and/or his attorney shall complete,
               execute,  and  deliver  to  Abraxas  a Form W-4  and/or  Form W-9
               providing  such  information  as may be  necessary  for any party
               issuing the appropriate  Internal Revenue Service form related to
               the Consideration.

         10.   Confidential Information of Abraxas:  Carington acknowledges that
               during his  employment  with  Abraxas,  Abraxas  disclosed to him
               confidential  affairs and proprietary  information of Abraxas and
               its subsidiaries and affiliates, all of which information belongs
               to  Abraxas  and  its  subsidiaries  and  affiliates,  including,
               without limitation, the following information (collectively,  the
               "Confidential  Information"):  (i)  any  and  all  trade  secrets
               concerning the business and affairs Abraxas, and its subsidiaries
               and affiliates, including without limitation,  geological studies
               and surveys,  knowledge of  reserves,  production,  environmental
               surveys,  research, planned or contemplated drilling sites, data,
               know-how, formulae,  compositions,  processes, designs, sketches,
               photographs,  graphs,  drawings,  samples,  inventions and ideas,
               past,  current and planned research and development,  acquisition
               opportunities, confidential investor information, market studies,
               business plans,  computer software and programs (including object
               code  and  source   code),   computer   software   and   database



               technologies,  systems, structures and architectures (and related
               processes,   formulae,   compositions,   improvements,   devices,
               know-how,  inventions,  discoveries,  concepts,  ideas,  designs,
               methods  and  information)  and any  other  information,  however
               documented,  that is a trade secret, (ii) any and all information
               concerning   the   business   and   affairs  of  Abraxas  and  it
               subsidiaries and affiliates (which includes historical  financial
               statements,  financial  projections  and budgets,  historical and
               projected revenues, capital spending budgets and plans, the names
               and  backgrounds  of  key  personnel,   personnel   training  and
               techniques and materials),  however documented, and (iii) any and
               all notes, analyses, compilations,  studies, summaries, and other
               material  prepared  by or for Abraxas  and its  subsidiaries  and
               affiliates or  containing  or based,  in whole or in part, on any
               information included in the foregoing.


               Carington   acknowledges  that  Abraxas  would  not  provide  the
               Consideration  herein  without the promises  made by Carington in
               this Paragraph.  In light of the foregoing,  Carington  covenants
               and agrees:

               a.  To keep secret all  Confidential  Information of Abraxas,  or
                   its  subsidiaries   and  affiliates,   and  not  to  disclose
                   Confidential  Information  to anyone  outside of Abraxas,  or
                   otherwise use this information or use his knowledge of it for
                   his  own  benefit  or for the  benefit  of any  third  party,
                   whether  Carington  has such  information  in his  memory  or
                   embodied  in  writing  or  other  physical  form,  including,
                   without limitation,  use of the trade secrets, trade names or
                   trademarks of Abraxas and

               b.  To deliver  promptly  to Abraxas on the  Separation  Date all
                   memoranda, notices, records, reports and other documents (and
                   all copies  thereof)  relating to the  business of Abraxas or
                   any of its  subsidiaries  or affiliates,  including,  but not
                   limited to,  Confidential  Information,  which you possess or
                   have under your control.

         11.   Entire  Agreement:   Carington   acknowledges   that,  except  as
               expressly set forth  herein,  no  representations  of any kind or
               character have been made by or on behalf of Abraxas to induce his
               execution  of this  document  and  that  this  Release  Agreement
               constitutes the complete  understanding and agreement between him
               and  Abraxas.  Carington  also  acknowledges  that  this  Release
               Agreement supersedes any and all prior agreements,  promises,  or
               inducements   concerning  this  subject  matter,   including  the
               Agreement. By signing this Release Agreement, Carington expressly
               disclaims any reliance on any representations, promises, or other
               statements by Abraxas, except to the extent such representations,
               promises,  or other  statements  are expressly  contained in this
               Release Agreement.

         12.   No Presumption Against Interest:  This Release Agreement has been
               jointly  negotiated,  drafted,  and  reviewed  by  Carington  and
               Abraxas  and,   therefore,   no  provision  arising  directly  or
               indirectly  herefrom may be construed  against any Party as being
               drafted by that Party.

         13.   Captions:  The captions  contained in this Release  Agreement are
               intended for  convenience  only and should not be  considered  in
               interpreting the terms of this Release Agreement.


         14.   Arbitration:  All disputes related to the terms and conditions of
               this Release Agreement,  including  interpretation of those terms
               and conditions and claims that this Release  Agreement has in any
               way been  breached,  shall be  submitted  to  final  and  binding
               arbitration  in  accordance  with the  provisions  of the Federal
               Arbitration Act (the "FAA"),  9 U.S.C. ss. 1 et seq. The terms of
               the National  Employment Dispute Resolution Rules of the American
               Arbitration  Association  (the "AAA"),  in effect at the time the
               arbitration is commenced,  shall apply, except to the extent they
               conflict with the provisions of this Release Agreement. A neutral
               arbitrator  shall be selected by the parties in  accordance  with
               the  rules  of  the  AAA.  Any   arbitrator   selected  shall  be
               knowledgeable   in  the  subject  matter  of  the  dispute.   The
               arbitrator  shall have the  exclusive  authority to determine the
               arbitrability  of any dispute that the  Releasors or the Released
               Parties  assert is subject to this  Paragraph 15. The  arbitrator
               shall also have the  exclusive  authority  to resolve any dispute
               relating to the interpretation,  applicability, enforceability or
               formation of this Release Agreement, including but not limited to
               any claim that all or part of the  Release  Agreement  is void or
               voidable.  All  costs,  fees  and  expenses  associated  with any
               arbitration  proceeding shall be borne by the party incurring the
               same,  except that the  arbitrator  shall have the  authority  to
               assess  costs  against the losing  party and to award  reasonable
               attorneys' fees to the prevailing party where such an award would
               be permitted  under the law  governing the claims  involved.  The
               award of the  arbitrator  shall be final  and  judgment  upon the
               award  rendered  may be  entered  in any state or  federal  court
               having  jurisdiction.  Each of the parties  hereto  knowingly and
               voluntarily  waives  any right to a trial by jury of any  dispute
               pertaining  to or relating in any way to this Release  Agreement,
               its breach,  interpretation or enforcement, the provisions of any
               federal,   state   or  local   law,   regulation   or   ordinance
               notwithstanding.

         15.   Understanding  of Agreement:  By signing this Release  Agreement,
               Carington  acknowledges that he has fully and carefully read this
               Release  Agreement,  that he fully  understands and agrees to its
               contents and effects,  and that he is entering  into this Release
               Agreement  of his own free  will and  accord.  Carington  further
               agrees and acknowledges that:


               []  He  has  read  and  considered  the  terms  of  this  Release
                   Agreement,  including  the  Release  and  Assignment  of  All
                   Claims;


               [] He  understands  and  agrees to such  terms of his own free
                  will and accord;


               [] He has had an opportunity to consult with an attorney prior
                  to executing this Release Agreement;


               [] The  release  and  assignment  of all  claims  specifically
                  refers to rights  and/or  claims that may arise under the Age
                  Discrimination  in Employment Act, 29 U.S.C. ss. 621 et seq.,
                  and any similar state or local protective statute;


               [] He has been given at least twenty-one (21) days to consider
                  this  Release  Agreement  (but  remains  free to execute this
                  Release  Agreement  before the  expiration of the  twenty-one
                  (21) days);



               [] For a seven (7) day period  following his execution of this
                  Release  Agreement,  he may  revoke it and it will not become
                  effective or  enforceable  until the  expiration of the seven
                  (7) day period; and


               [] His  revocation,  if any,  must be in  writing  and sent to
                  Donna K. McElroy, Cox Smith Matthews  Incorporated,  112 East
                  Pecan  Street,  Suite 1800,  San Antonio,  Texas  78205,  via
                  facsimile  on or before the close of  business on the seventh
                  day after this Release  Agreement is executed by him at (210)
                  226-8395  and hand  delivery at the same address or e-mail to
                  Donna K. McElroy at dkm@coxsmith.com.










Signed this 14th day of October, 2005, at San Antonio, Bexar County, Texas.



/s/ Robert W. Carington, Jr.
- ---------------------------
Robert W. Carington, Jr.


THE STATE OF TEXAS

COUNTY OF BEXAR

Before me, the undersigned authority,  on this day personally appeared Robert W.
Carington,  Jr.,  known to me to be the person whose name is  subscribed  to the
foregoing  Release  Agreement,  and acknowledged to me that he executed the same
for the purposes and consideration therein expressed.

Given under my hand and seal of office on this 14th day of October, 2005.



/s/ Barbara M. Stuckey
- -----------------------------
Notary Public, State of Texas







Signed this 14th day of October, 2005, at San Antonio, Bexar County, Texas.


ABRAXAS PETROLEUM CORPORATION



/s/ Robert L. G. Watson
- -------------------------------------
Robert L. G. Watson
President and Chief Executive Officer