Date | Grid | Clue | Author | Editor |
Sat, May 11, 2024 | 42A | Burgess ___ (rock bed noted for its fossils) | Billy Bratton | Fagliano |
Thu, Mar 07, 2024 | 33A | Layered rock | Joe O'Neill | Shortz |
Wed, Nov 08, 2023 | 55D | Flaky rock | Daniel Hrynick | Shortz |
Fri, Jul 14, 2023 | 40D | Fracking target | Jonathan Kaufman | Shortz |
Sun, Jun 13, 2021 | 99D | One source of oil | Stephen McCarthy | Shortz |
Wed, Mar 31, 2021 | 5D | Thin-layered sedimentary rock | Trenton Charlson | Shortz |
Fri, Jul 24, 2020 | 1A | Rock in which fossils can be found | Grant Thackray | Shortz |
Fri, Nov 01, 2019 | 27D | Some mudrock | Robyn Weintraub | Shortz |
Sat, Dec 29, 2018 | 35A | Oil source | Robyn Weintraub | Shortz |
Mon, Aug 28, 2017 | 41D | Oil-producing rock | Dan Margolis | Shortz |
Fri, Jun 23, 2017 | 23A | Fracking target | James Mulhern and Ashton Anderson | Shortz |
Tue, Jan 10, 2017 | 43A | *Sedimentary rock | David Poole | Shortz |
Sat, Dec 24, 2016 | 1A | Something fracked in fracking | David Steinberg | Shortz |
Wed, Nov 02, 2016 | 13A | Fuel-yielding rock | Andrew Kingsley | Shortz |
Tue, Mar 08, 2016 | 54A | Fracking material | David Steinberg | Shortz |
Thu, Dec 04, 2014 | 7D | Something settled long ago? | Kacey Walker and David Quarfoot | Shortz |
Mon, Dec 01, 2014 | 40A | Mineral layer involved in fracking | John Guzzetta | Shortz |
Sun, Oct 06, 2013 | 72A | Rock used for flagstones | Patrick Berry | Shortz |
Mon, Oct 15, 2012 | 12D | Oil-producing rock | Tom Pepper | Shortz |
Sat, Jun 27, 2009 | 57A | Oil source | Trip Payne | Shortz |
Sun, Apr 19, 2009 | 79D | Fossil source | Will Nediger | Shortz |
Fri, Feb 20, 2009 | 24D | Slate, originally | Paula Gamache | Shortz |
Sun, Nov 30, 2008 | 100D | Fossil-yielding rock | Richard Silvestri | Shortz |
Fri, Mar 03, 2006 | 3D | Shelf material | Tyler Hinman | Shortz |
Fri, Nov 12, 2004 | 54A | Fossil medium | Brendan Emmett Quigley and Ethan Friedman | Shortz |
Wed, Oct 01, 2003 | 20A | Oil source | A. J. Santora | Shortz |
Sat, Sep 06, 2003 | 5A | Brick ingredient | David J. Kahn | Shortz |
Fri, Mar 28, 2003 | 13A | Oil source | Cathy Millhauser | Shortz |
Sun, Mar 09, 2003 | 76A | Petroleum source | Patrick Berry | Shortz |
Fri, Aug 02, 2002 | 33A | Mudstone | Elizabeth C. Gorski | Shortz |
Wed, Dec 05, 2001 | 43A | Oil source | Frances Hansen | Shortz |
Thu, Aug 10, 2000 | 26D | Rock that may hold fossils | Mark Diehl | Shortz |
Fri, Oct 01, 1999 | 12D | Synfuel source | John Wolting | Shortz |
Wed, Oct 14, 1998 | 33D | Oil source | Jay Sullivan | Shortz |
Sat, Oct 25, 1997 | 47D | Kind of oil | John Scott Marrone | Shortz |
Mon, Feb 19, 1996 | 15A | Laminated rock | T. W. Schier | Shortz |
Mon, Apr 10, 1995 | 44D | Laminated rock | Sidney L. Robbins | Shortz |
Sun, Jan 16, 1994 | 21A | Oil source | Ernst Theimer | Shortz |
Thu, Nov 25, 1993 | 53A | Easily split rock | Joy L. Wouk | Shortz |