================================================================================

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


      Date of Report (Date of earliest event reported): September 27, 2007
                              (September 27, 2007)


                             GASTAR EXPLORATION LTD.
             (Exact Name of Registrant as Specified in Its Charter)


       ALBERTA, CANADA                001-32714                  38-3324634
(State or other jurisdiction         (Commission                (IRS Employer
      of incorporation)              File Number)            Identification No.)


                          1331 LAMAR STREET, SUITE 1080
                              HOUSTON, TEXAS 77010
                    (Address of principal executive offices)

                                 (713) 739-1800
              (Registrant's telephone number, including area code)

                                       N/A
          (Former name or former address, if changed since last report)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

|_|  Written communications pursuant to Rule 425 under the Securities Act (17
     CFR 230.425)

|_|  Soliciting material pursuant to Rule 14a-12 under the exchange Act (17 CFR
     240.14a-12)

|_|  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

|_|  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))

================================================================================



SECTION 7 - REGULATION FD

ITEM 7.01 REGULATION FD DISCLOSURE

     On September 27, 2007, Gastar Exploration Ltd. announced the results of an
independent reserves study for its PEL 238 Bohena coal seam gas project in New
South Wales, Australia.

     The press release is attached as Exhibit 99.1 and is being furnished solely
pursuant to Item 7.01 of this report.

SECTION 9 - FINANCIAL STATEMENTS AND EXHIBITS

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS

(d)  Exhibits

The following is a list of exhibits furnished as part of this Form 8-K:

Exhibit No.                      Description of Document
-----------     ----------------------------------------------------------------

   99.1         Press release dated September 27, 2007.


                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                       GASTAR EXPLORATION LTD.


Date: September 27, 2007               By: /s/  J. RUSSELL PORTER
                                           -------------------------------------
                                           J. Russell Porter
                                           President and Chief Executive Officer

                                      -2-



                                  EXHIBIT INDEX

Exhibit No.                      Description of Document
-----------     ----------------------------------------------------------------

   99.1         Press release dated September 27, 2007.


                                      -3-