Blast rock used in building (5) |
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Sedimentary rock formed by layers of clay (5) |
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Stratified stone |
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Oil-bearing rock |
Newsday |
31 Mar 2024 |
Layered rock |
New York Times |
07 Mar 2024 |
Fossil fuel rock deposit |
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Small, healthy stone (5) |
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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") |
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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 |
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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 |
The Washington Post |
11 Apr 2021 |
__ oil |
LA Times Daily |
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 |
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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 |
New York Times |
01 Nov 2019 |
Some mudrock |
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Fuel-yielding rock |
The Sun Two Speed |
15 Oct 2019 |
Oil source has damaged the French |
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 |
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Product of clay compaction |
Wall Street Journal |
12 Jan 2019 |
Fissile rock |
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Product of clay compaction |
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Rock that's "fracked" |
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Oil-yielding rock |
|
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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 |
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Oil-yielding mineral |
USA Today |
09 Aug 2018 |
Petroleum source |
The Washington Post |
22 Jul 2018 |
Petroleum source |
LA Times Daily |
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 |
|
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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! |
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Layered sedimentary rock |
Irish Times Simplex |
16 Jan 2018 |
Fossil-yielding sedimentary rock |
USA Today |
10 Jan 2018 |
Fossil source |
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Oil source |
|
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Rock from which slate is formed |
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Petroleum source |
|
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Fossil-yielding rock |
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Sedimentary rock |
|
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Easily cleaved rock |
|
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Fossil-yielding sedimentary rock |
|
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Oil-yielding mineral |
|
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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 |
Oil-producing rock |
|
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Rock that's fracked |
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Fracking target |
|
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*Sedimentary rock |
|
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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 |
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Fissile rock |
|
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Fuel-yielding rock |
|
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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 |
Oil source |
|
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Fissile rock |
|
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Hardly hard rock? |
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Flagstone material |
|
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Mineral layer involved in fracking |
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Something settled long ago? |
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Layered rock |
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Petroleum source |
|
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Laminated rock |
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Layered rock |
|
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Fuel-yielding rock |
|
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Thin-layered rock |
|
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Fracking target |
|
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Oil source |
|
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Compressed clay |
|
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Rock used for flagstones |
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Fine-grained sedimentary rock |
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Rock that may yield oil |
|
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Easily split rock |
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Rock often containing quartz |
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Oil-bearing rock |
|
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Fossil holder |
|
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Kerosene source |
|
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Rock often containing quartz |
|
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Kerosene source |
|
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Product of mud compaction |
|
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Oil-rich mineral |
|
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Fine-grained sedimentary rock |
|
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Possible source of petroleum |
|
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Oil-bearing rock |
|
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Fine-grained rock |
|
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Most common sedimentary rock |
|
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Layered fissile rock |
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Oil-yielding rock |
|
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Oil-bearing rock |
|
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Oil-yielding rock |
|
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Oil-yielding rock |
|
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Oil-producing rock |
|
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Fossil source |
|
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Oil source |
|
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A source of oil |
|
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Fuel-yielding rock |
|
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Source of oil |
|
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Slate, originally |
|
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Oil source |
|
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Petroleum source |
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Oil source |
|
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Oil source |
|
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Synfuel source |
|
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Fossil-yielding rock |
|
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Thin-layered rock |
|
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Rock made from layered mud |
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Rock that splits easily |
|
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River-delta material |
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Sedimentary rock |
|
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Rock made in layers |
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Common fossil rock |
|
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Synfuel source |
|
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Oil source |
|
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Petroleum source |
|
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Shelf material |
|
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Source of kerosene |
|
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Oil-yielding rock |
|
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Stratified rock |
|
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Oil source |
|
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Sedimentary rock |
|
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Oily rock |
|
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Mud, after centuries |
|
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Mudstone, e.g. |
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Fissile rock |
|
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Claylike rock |
|
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Oil-bearing rock |
|
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Oil source |
|
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Layered rock |
|
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Stratified rock |
|
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Fossil holder |
|
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Petroleum source |
|
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Oil-bearing rock |
|
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Fossil medium |
|
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Oil source |
|
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Fissile rock |
|
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Sedimentary rock |
|
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Stratified rock |
|
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Layered rock |
|
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Rock made into flagstones |
|
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Fine-grained rock |
|
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Fissile rock |
|
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Synfuel source |
|
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Fine-grained rock |
|
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Source of aluminum |
|
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Brick ingredient |
|
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Petroleum source |
|
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Sedimentary stuff |
|
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Not exactly hard rock? |
|
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Oil-yielding rock |
|
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Possible source of petroleum |
|
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Mudstone |
|
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Oil source |
|
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Thin layered rock |
|
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Oil-producing rock |
|
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Laminated rock |
|
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Laminated rock |
|
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Source of aluminum |
|
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Flagstone material |
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Synfuel source |
|
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Oil rock |
|
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Oil rock |
|
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Oil--producing rock |
|
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Rock that may hold fossils |
|
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Rock-made from layered mud |
|
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Laminar rock |
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Layered rock |
|
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Hardly hard rock? |
|
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Flaky rock |
|
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Grained rock |
|
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Synfuel source |
|
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Layered rock |
|
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Mudstone |
|
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Laminated rock |
|
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Not exactly hard rock? |
|
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Flaky rock |
|
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Kind of oil |
|
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Sedimentary rock |
|
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Laminated rock |
|
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Easily split rock |
|
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Fissile rock |
|
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Layered rock |
|
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Clayey rock |
|
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Oily stone |
|
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Type of oil |
|
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An oil source |
|
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Fragile layered rock |
|
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Oil source |
|
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Fuel-yielding rock |
|
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Cleavable rock |
|
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Argillaceous rock |
|
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Sedimentary rock |
|
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Rock that splits into bits |
|
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A source of oil |
|
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Fine-grained rock |
|
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___ oil |
|
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Potential oil source |
|
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One source of oil |
|
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Oil yielder |
|
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Source of oil |
|
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Oil rock |
|
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Oil-bearing rock |
|
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Kind of rock |
|
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Emergency oil source |
|
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Type of rock |
|
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Porous rock. |
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Fine-grained rock. |
|
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Type of rock. |
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Fissile rock. |
|
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Rock. |
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Petroleum source. |
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Petrologist's concern. |
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Laminated rock. |
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Fragile layered rock |
|
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Rock used in fracking |
|
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Product of mud compaction |
|
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