| Slate source |
Thomas Joseph |
02 Aug 2025 |
| Fossil-yielding rock |
Universal |
14 Jul 2025 |
| Oil source has damaged the French |
The Sun Two Speed |
07 Jul 2025 |
| Fuel-yielding rock |
The Sun Two Speed |
07 Jul 2025 |
| Cut-price event involves hard rock (5) |
|
|
| Cement ingredient |
New York Times |
23 May 2025 |
| Rock that readily splits |
|
|
| Readily-splitting clay rock |
|
|
| Oil source rock |
|
|
| Rock that could contain oil |
|
|
| Rock that easily fractures |
New York Times Mini |
19 Apr 2025 |
| Dark fine-grained sedimentary rock (5) |
|
|
| Flaky rock |
Mirror Tea Time |
19 Mar 2025 |
| Smooth layered rock (5) |
|
|
| Layered rock |
New York Times |
17 Feb 2025 |
| Petroleum-yielding rock |
Newsday |
21 Jan 2025 |
| Clay rock |
|
|
| Rock formed from clay |
Thomas Joseph |
10 Jan 2025 |
| Heals (anag) (5) |
|
|
| Scaly stone |
|
|
| Spades fit into rock (5) |
|
|
| Alternative petroleum source |
|
|
| Lash out then start eating rock (5) |
|
|
| Husband in market for oil source |
The Sun Two Speed |
08 Nov 2024 |
| Fuel-yielding rock |
The Sun Two Speed |
08 Nov 2024 |
| The most common type of sedimentary rock (5) |
|
|
| Flaky rock |
Universal |
30 Oct 2024 |
| Sedimentary rock (5) |
The Guardian Quick |
15 Oct 2024 |
| Flaky rock known for holding fossils |
|
|
| Flaky rock that's a source of oil |
|
|
| Readily-splitting rock |
|
|
| Petroleum source |
Newsday |
29 Sep 2024 |
| Stratified rock which splits easily, created by successive layers of clay (5) |
|
|
| Oil source has excited the French |
The Sun Two Speed |
25 Sep 2024 |
| Fuel-yielding rock |
The Sun Two Speed |
25 Sep 2024 |
| Rock that's a source of petroleum |
|
|
| Layered rock |
Eugene Sheffer |
20 Sep 2024 |
| Oil-bearing rock |
Newsday |
10 Sep 2024 |
| Oil source has damaged the French |
The Sun Two Speed |
09 Sep 2024 |
| Fuel-yielding rock |
The Sun Two Speed |
09 Sep 2024 |
| Burgess _, British Columbia's fossils-rich site from 500 million plus years ago |
|
|
| Fossil rock |
Premier Sunday |
18 Aug 2024 |
| Layered rock; leash (anag.) |
The Telegraph Plusword |
17 Aug 2024 |
| Soft, sedimentary rock |
USA Today |
15 Aug 2024 |
| Oil-bearing rock |
USA Today |
24 Jul 2024 |
| Most common sedimentary rock |
Wall Street Journal |
17 Jul 2024 |
| Quiet beer is what produces gas? |
The Telegraph Toughie |
27 Jun 2024 |
| Flaky rock was originally sound and strong (5) |
|
|
| Clay-based rock |
|
|
| Auction includes hard rock (5) |
The Guardian Cryptic |
03 Jun 2024 |
| Rock that's a source of oil |
|
|
| Burgess ___ (rock bed noted for its fossils) |
New York Times |
11 May 2024 |
| She has the French rock splitting readily (5) |
|
|
| Blast rock used in building (5) |
|
|
| Sedimentary rock formed by layers of clay (5) |
|
|
| Stratified stone |
|
|
| Oil-bearing rock |
Newsday |
31 Mar 2024 |
| Layered rock |
New York Times |
07 Mar 2024 |
| Fossil fuel rock deposit |
|
|
| Small, healthy stone (5) |
|
|
| Fine-grained sedimentary rock |
Mirror Tea Time |
28 Jan 2024 |
| Soft rock prince found in the Kent area |
The Times Cryptic |
11 Dec 2023 |
| Flaky rock |
New York Times |
08 Nov 2023 |
| Sedimentary rock |
Thomas Joseph |
01 Nov 2023 |
| Rock formed from clay |
Thomas Joseph |
04 Oct 2023 |
| Layered rock |
LA Times Daily |
20 Aug 2023 |
| Fracking target |
New York Times |
14 Jul 2023 |
| Oil-bearing rock |
Newsday |
07 Jun 2023 |
| Oil-yielding rock |
Newsday |
04 Jun 2023 |
| Oil-bearing rock |
Newsday |
26 Apr 2023 |
| Fissile rock |
LA Times Daily |
12 Apr 2023 |
| Quiet beer possibly source of gas |
The Telegraph Cryptic |
16 Feb 2023 |
| Rock formed from compressed mud |
Wall Street Journal |
31 Jan 2023 |
| Fracking target |
LA Times Daily |
06 Jan 2023 |
| Rock a prince found in the Kent area |
The Times Cryptic |
13 Dec 2022 |
| Compressed clay |
Canadiana |
26 Sep 2022 |
| Fossil-yielding rock |
USA Today |
14 Aug 2022 |
| Fissile rock |
Wall Street Journal |
11 Aug 2022 |
| Soft rock (rhymes with "whale") |
|
|
| Thin-layered rock |
LA Times Daily |
19 Jun 2022 |
| Fine-grained sedimentary rock |
Irish Times Simplex |
17 Jun 2022 |
| A strong leader and hearty too, perhaps, with many layers. |
Irish Times Crosaire |
03 May 2022 |
| Oil-bearing rock |
USA Today |
06 Nov 2021 |
| Rock involved in fracking |
USA Today |
13 Oct 2021 |
| Slate source |
Thomas Joseph |
09 Jul 2021 |
| Thin-layered rock |
|
|
| Oil-rich mineral |
Universal |
20 Jun 2021 |
| One source of oil |
New York Times |
13 Jun 2021 |
| Oil source |
Universal |
15 May 2021 |
| Petroleum source |
Newsday |
13 May 2021 |
| Compressed clays |
Canadiana |
10 May 2021 |
| Oil-bearing rock |
Universal |
26 Apr 2021 |
| __ oil |
LA Times Daily |
11 Apr 2021 |
| __ oil |
The Washington Post |
11 Apr 2021 |
| Thin-layered sedimentary rock |
New York Times |
31 Mar 2021 |
| Fissile rock |
Wall Street Journal |
27 Mar 2021 |
| Singular, healthy, variety of gas |
|
|
| Fuel oil source |
Newsday |
10 Jan 2021 |
| Easily split rock |
Universal |
09 Dec 2020 |
| Rock source of petroleum |
Newsday |
27 Oct 2020 |
| Oil source |
Wall Street Journal |
10 Oct 2020 |
| Rock in which fossils can be found |
New York Times |
24 Jul 2020 |
| Oil-producing rock |
Universal |
29 Apr 2020 |
| Sedimentary rock |
The New Yorker |
06 Apr 2020 |
| Rock formed from clay |
Thomas Joseph |
21 Dec 2019 |
| Sedimentary rock |
Thomas Joseph |
09 Dec 2019 |
| Frackable rock |
Wall Street Journal |
06 Nov 2019 |
| Some mudrock |
|
|
| Some mudrock |
New York Times |
01 Nov 2019 |
| Oil source has damaged the French |
The Sun Two Speed |
15 Oct 2019 |
| Fuel-yielding rock |
The Sun Two Speed |
15 Oct 2019 |
| Rock that's 'fracked' |
USA Today |
28 Sep 2019 |
| Oil-producing rock |
Newsday |
17 Sep 2019 |
| Oil-yielding rock |
USA Today |
28 May 2019 |
| Fissile rock |
Universal |
26 May 2019 |
| Introduction of secure, healthy, source of gas |
|
|
| Product of clay compaction |
Wall Street Journal |
12 Jan 2019 |
| Fissile rock |
|
|
| Rock that's "fracked" |
|
|
| Oil-yielding rock |
|
|
| Product of clay compaction |
|
|
| Oil source |
New York Times |
29 Dec 2018 |
| Fossil source |
Universal |
21 Dec 2018 |
| Oil source has excited the French |
The Sun Two Speed |
10 Dec 2018 |
| Easily cleaved rock |
USA Today |
03 Oct 2018 |
| Rock from which slate is formed |
USA Today |
27 Sep 2018 |
| Sunflower's head — healthy source of oil |
|
|
| Oil-yielding mineral |
USA Today |
09 Aug 2018 |
| Petroleum source |
LA Times Daily |
22 Jul 2018 |
| Petroleum source |
The Washington Post |
22 Jul 2018 |
| Oil-bearing rock |
Newsday |
11 Jul 2018 |
| Fossil-yielding rock |
Universal |
21 Jun 2018 |
| Oil-bearing rock |
The Times Concise |
22 May 2018 |
| Thin layered rock |
|
|
| Sedimentary rock |
Universal |
25 Apr 2018 |
| Rock that's "fracked" |
USA Today |
24 Mar 2018 |
| Say nothing, given drink that may be full of gas! |
|
|
| Layered sedimentary rock |
Irish Times Simplex |
16 Jan 2018 |
| Fossil-yielding sedimentary rock |
USA Today |
10 Jan 2018 |
| Petroleum source |
|
|
| Oil source |
|
|
| Oil-yielding mineral |
|
|
| Rock from which slate is formed |
|
|
| Fossil-yielding sedimentary rock |
|
|
| Sedimentary rock |
|
|
| Fossil-yielding rock |
|
|
| Fossil source |
|
|
| Easily cleaved rock |
|
|
| Rock that's fracked |
USA Today |
24 Dec 2017 |
| Fracking target |
Wall Street Journal |
14 Nov 2017 |
| Oil-producing rock |
New York Times |
28 Aug 2017 |
| Fuel-yielding rock |
Newsday |
06 Jul 2017 |
| Fracking target |
New York Times |
23 Jun 2017 |
| Layered rock |
Eugene Sheffer |
09 May 2017 |
| Source of gas market includes hydrogen |
The Telegraph Toughie |
13 Apr 2017 |
| *Sedimentary rock |
New York Times |
10 Jan 2017 |
| Rock that's fracked |
|
|
| *Sedimentary rock |
|
|
| Fracking target |
|
|
| Oil-producing rock |
|
|
| Something fracked in fracking |
New York Times |
24 Dec 2016 |
| Fuel-yielding rock |
New York Times |
02 Nov 2016 |
| Mud, after compaction |
Wall Street Journal |
21 Oct 2016 |
| Fossil-yielding rock |
The Washington Post |
16 Oct 2016 |
| __ oil |
Newsday |
20 Aug 2016 |
| Sedimentary rock |
The Times Concise |
17 May 2016 |
| Fissile rock |
LA Times Daily |
07 May 2016 |
| Layered rock |
LA Times Daily |
21 Apr 2016 |
| Fracking material |
New York Times |
08 Mar 2016 |
| Slate source |
Premier Sunday |
24 Jan 2016 |
| Fissile rock |
Premier Sunday |
17 Jan 2016 |
| Something fracked in fracking |
|
|
| Fuel-yielding rock |
|
|
| Fissile rock |
|
|
| Oil source |
Newsday |
22 Nov 2015 |
| Easily split layered rock |
Irish Times Simplex |
25 Aug 2015 |
| Fissile rock |
USA Today |
21 Aug 2015 |
| Rock hotel in auction |
The Telegraph Cryptic |
01 Jul 2015 |
| Hardly hard rock? |
USA Today |
04 May 2015 |
| Flagstone material |
Universal |
09 Mar 2015 |
| Easily-split sedimentary rock |
Irish Times Simplex |
17 Jan 2015 |
| Flagstone material |
|
|
| Hardly hard rock? |
|
|
| Oil source |
|
|
| Fissile rock |
|
|
| Laminated rock |
|
|
| Petroleum source |
|
|
| Mineral layer involved in fracking |
|
|
| Something settled long ago? |
|
|
| Thin-layered rock |
|
|
| Layered rock |
|
|
| Fracking target |
|
|
| Fuel-yielding rock |
|
|
| Layered rock |
|
|
| Fine-grained sedimentary rock |
|
|
| Rock that may yield oil |
|
|
| Compressed clay |
|
|
| Rock used for flagstones |
|
|
| Oil source |
|
|
| Oil-bearing rock |
|
|
| Rock often containing quartz |
|
|
| Oil-bearing rock |
|
|
| Product of mud compaction |
|
|
| Possible source of petroleum |
|
|
| Oil-rich mineral |
|
|
| Easily split rock |
|
|
| Fine-grained sedimentary rock |
|
|
| Kerosene source |
|
|
| Fossil holder |
|
|
| Rock often containing quartz |
|
|
| Kerosene source |
|
|
| Fine-grained rock |
|
|
| Most common sedimentary rock |
|
|
| Oil-yielding rock |
|
|
| Oil-producing rock |
|
|
| Oil-bearing rock |
|
|
| Oil-yielding rock |
|
|
| Layered fissile rock |
|
|
| Oil-yielding rock |
|
|
| A source of oil |
|
|
| Slate, originally |
|
|
| Oil source |
|
|
| Fossil source |
|
|
| Fuel-yielding rock |
|
|
| Oil source |
|
|
| Petroleum source |
|
|
| Source of oil |
|
|
| Rock made from layered mud |
|
|
| Fossil-yielding rock |
|
|
| Rock that splits easily |
|
|
| Thin-layered rock |
|
|
| Oil source |
|
|
| Oil source |
|
|
| Synfuel source |
|
|
| Synfuel source |
|
|
| Rock made in layers |
|
|
| River-delta material |
|
|
| Sedimentary rock |
|
|
| Common fossil rock |
|
|
| Oil source |
|
|
| Shelf material |
|
|
| Oil-yielding rock |
|
|
| Stratified rock |
|
|
| Petroleum source |
|
|
| Source of kerosene |
|
|
| Mud, after centuries |
|
|
| Claylike rock |
|
|
| Oil source |
|
|
| Fissile rock |
|
|
| Mudstone, e.g. |
|
|
| Sedimentary rock |
|
|
| Oily rock |
|
|
| Fossil medium |
|
|
| Layered rock |
|
|
| Stratified rock |
|
|
| Oil source |
|
|
| Petroleum source |
|
|
| Sedimentary rock |
|
|
| Layered rock |
|
|
| Stratified rock |
|
|
| Fissile rock |
|
|
| Oil-bearing rock |
|
|
| Oil source |
|
|
| Oil-bearing rock |
|
|
| Fossil holder |
|
|
| Sedimentary stuff |
|
|
| Fine-grained rock |
|
|
| Source of aluminum |
|
|
| Rock made into flagstones |
|
|
| Fine-grained rock |
|
|
| Fissile rock |
|
|
| Synfuel source |
|
|
| Brick ingredient |
|
|
| Petroleum source |
|
|
| Oil source |
|
|
| Mudstone |
|
|
| Thin layered rock |
|
|
| Possible source of petroleum |
|
|
| Not exactly hard rock? |
|
|
| Oil-yielding rock |
|
|
| Laminated rock |
|
|
| Oil rock |
|
|
| Oil-producing rock |
|
|
| Synfuel source |
|
|
| Laminated rock |
|
|
| Flagstone material |
|
|
| Source of aluminum |
|
|
| Rock-made from layered mud |
|
|
| Oil--producing rock |
|
|
| Oil rock |
|
|
| Rock that may hold fossils |
|
|
| Grained rock |
|
|
| Layered rock |
|
|
| Layered rock |
|
|
| Laminar rock |
|
|
| Hardly hard rock? |
|
|
| Flaky rock |
|
|
| Synfuel source |
|
|
| Flaky rock |
|
|
| Not exactly hard rock? |
|
|
| Mudstone |
|
|
| Laminated rock |
|
|
| Kind of oil |
|
|
| Sedimentary rock |
|
|
| Laminated rock |
|
|
| Easily split rock |
|
|
| Fissile rock |
|
|
| Clayey rock |
|
|
| Layered rock |
|
|
| Oily stone |
|
|
| Type of oil |
|
|
| An oil source |
|
|
| Fragile layered rock |
|
|
| Fuel-yielding rock |
|
|
| Oil source |
|
|
| Cleavable rock |
|
|
| Argillaceous rock |
|
|
| Sedimentary rock |
|
|
| A source of oil |
|
|
| Rock that splits into bits |
|
|
| Fine-grained rock |
|
|
| ___ oil |
|
|
| One source of oil |
|
|
| Potential oil source |
|
|
| Oil yielder |
|
|
| Oil rock |
|
|
| Source of oil |
|
|
| Emergency oil source |
|
|
| Kind of rock |
|
|
| Oil-bearing rock |
|
|
| Product of mud compaction |
|
|
| Fragile layered rock |
|
|
| Type of rock |
|
|
| Fissile rock. |
|
|
| Type of rock. |
|
|
| Fine-grained rock. |
|
|
| Rock. |
|
|
| Porous rock. |
|
|
| Petroleum source. |
|
|
| Petrologist's concern. |
|
|
| Laminated rock. |
|
|
| Rock used in fracking |
|
|