Tag: rocks

17 What was the first rock in the rock cycle? 2015-03-24T05:55:44.937

15 Are the processes of the rock cycle currently in dynamic equilibrium? 2014-05-05T04:01:08.037

14 How are the patterns in solid rock born 2014-08-08T13:14:48.773

14 How to learn the different types of rock 2015-08-11T14:15:04.393

13 How are giant sinkholes filled up? 2017-09-26T13:59:11.673

12 Formation of limestone without living organisms? 2014-07-28T09:31:19.590

11 Identifying sedimentary rocks in hand specimen 2014-06-04T00:54:38.957

11 Zeolites, odor control, and the witchcraft of sunlight 2014-09-13T19:05:53.303

11 What is the oldest sediment? 2014-12-22T15:26:09.690

11 What sort of rock is the large polished boulder? 2015-08-17T09:31:11.290

10 What kind of coal did I find? 2014-08-06T02:35:52.850

10 Can rocks have pressure signatures? 2015-07-30T04:06:57.433

10 Rock ID: a black rock/lava? around another white rock, unknown location 2016-01-30T22:14:49.040

10 Strange scar marks on pebble 2018-07-12T10:55:53.293

9 What do you call boulders of non sedimentary rock that were lithified into sandstone? 2016-02-28T04:29:11.227

9 How long does it take for a stone to decompose? 2017-02-12T17:28:12.877

9 Rock ID: brittle black/white w/ crystals & mica-like cleavage layers, Raleigh, NC, USA 2017-02-18T17:41:52.197

9 Are "monoliths" giant, isolated rocks sitting in dirt, or are they continuous with bedrock 2017-04-03T09:59:26.850

8 Rock ID: Large, heterogeneous, magnetic rock in Cascade Range, Washington, USA 2015-09-28T04:00:50.047

8 Rock ID: Geode, soft, dull black exterior with crystal inside, from Snæfellsnes, Iceland 2016-01-11T03:11:35.800

8 Rock ID: smooth, black, durable rock from Lake Ontario 2016-10-29T19:48:00.913

8 Identification of dark red, metallic mineral 2017-04-29T09:43:18.357

7 What is this brown and white rock? 2014-06-22T10:51:12.850

7 What is this Cape Breton rock? 2014-08-02T13:58:04.477

7 Recreating the rock cycle 2015-03-23T00:21:29.750

7 We found this rock and we don't know what it is 2015-08-15T10:46:25.340

7 What type of rock is this paving stone and what is the origin of the red colouration? 2015-08-16T23:31:38.633

7 What kind of a rock is this (from Finland)? 2015-11-29T16:56:35.713

7 What kind of rock is this gray and brown weathered cylinder-shaped rock I found near a New York lake? 2018-03-02T20:38:00.240

6 How can a non-geologist identify a rock? 2014-04-20T16:10:30.760

6 What kind of rock is this (from UK)? 2015-07-22T19:50:09.850

6 Is this iron ore? 2015-09-08T13:21:45.330

6 How to identify a predator's coprolite from an herbivore's? 2015-10-11T19:12:37.370

6 Rock identification: meteorite or lava? 2015-11-06T22:42:53.320

6 Basalt vs. columnar basalt 2016-05-10T13:02:49.450

6 How was this egg shaped rock made and what is it? 2016-08-19T15:48:15.293

6 Is this iron ore? If so what kind? And is it naturally deposited in texhoma? 2017-02-19T22:24:43.630

6 Identify rock with circular features 2017-04-02T03:45:32.617

6 Why are most minerals so rare? 2017-04-12T14:31:51.000

6 What are the blue spots in this rock? 2017-05-08T17:55:20.167

5 What type of rock is this that is light colored with greenish crystals? 2014-04-17T08:39:12.657

5 What are these tumbled colored rocks? 2014-12-21T21:39:28.167

5 What type of sparking stone could this be? 2015-03-15T16:09:22.417

5 What could have formed the pattern inside this piece of siltstone? 2015-08-03T03:37:43.713

5 Definitive values that classifies a rock as having “low”, “medium”, and “high” -strength, -hardness, -toughness, and -consolidation? 2016-01-05T20:04:53.143

5 Strange coating in old lime mine shaft 2016-04-05T21:14:49.233

5 What type of rock is this and how did it form? 2016-05-07T10:55:22.233

5 How this sedimentary rock is made? 2016-07-19T09:22:07.533

5 What is the mineral showing in this piece of gneiss? 2016-10-14T20:34:25.867

5 Is this a rock? 2016-10-19T02:50:33.373

5 Any idea what are these circular rock marks? 2016-12-10T19:07:30.000

5 Can someone please help identify my rock 2017-01-06T21:41:13.313

5 What rock is this? 2017-02-13T17:59:11.790

5 I'm trying to find the name of this rock 2017-02-27T03:38:28.310

5 What are these crystals? 2017-05-02T08:19:47.343

5 What are these oblong shaped rocks called, with pigment inside? 2017-05-12T00:28:13.980

5 There are cloud identification guides, are there also (guided) rock identification websites? 2017-06-24T15:05:30.380

5 Geology - Rock Identification help please. Melted metal looking rocks in the middle of nowhere 2017-08-04T15:47:00.897

5 What is the global distribution of oil filled geodes? 2017-11-17T01:28:46.340

5 What is this complex reddish-brown stone with lighter spots found at a NZ beach? 2018-01-17T00:26:54.703

5 Basalt, slag or meteorite? 2018-07-22T09:21:02.683

5 How is this crumbly crystal-rich rock formed? 2018-09-01T02:06:35.627

4 What are the most common minerals at the Earth's surface? 2015-05-28T17:53:19.863

4 How to find rocks worth tumbling? 2015-07-20T07:35:46.407

4 Why is coal classified as a sedimentary rock? 2015-10-12T22:06:10.187

4 Why pro-gradation occurs along coastal environments? 2015-12-08T22:18:57.307

4 Does flow banding only occur in silicic rocks? 2016-01-03T14:27:12.980

4 Can you confirm if this rock is sandstone - it is this from Cape Cod, MA, USA 2016-01-05T19:34:09.833

4 What kind of rock or mineral is this? 2016-01-14T21:38:08.547

4 Link between different ways of modeling permeability 2016-05-06T15:40:22.793

4 Can anyone identify this stone? 2016-09-21T16:20:47.020

4 Can you identify this rock? 2016-11-13T18:48:26.987

4 Identification of mineral 2016-12-29T14:01:42.713

4 Help me to identify this rock, please, 2017-02-08T11:19:21.700

4 Can someone identify this rock with fibrous white veins 2017-02-22T08:28:42.357

4 Can anyone tell me what this is? 2017-04-28T03:00:33.090

4 what is a transverse isotropic rock? 2017-05-09T15:42:08.817

4 What is this stone? 2017-05-19T16:05:19.880

4 Please help me identify this stone 2017-06-06T08:28:18.263

4 I don't know what this rock is 2017-07-16T23:26:21.233

4 Radon is a naturally occurring radioactive gas. How does this work? 2017-11-29T06:24:13.843

4 Unidentified mineral found in France 2018-08-01T19:05:11.497

4 Identification: mystery rock with golden features and shimmer 2018-11-15T15:13:40.137

3 The differences in gases produced by asteroids impacting crystalline and sedimentary rocks 2015-03-24T04:37:22.063

3 Rock identification: opal or crystal? 2015-11-06T13:19:04.090

3 Can anyone identify and describe this rock? 2015-11-09T00:28:09.597

3 Growth identification on obsidian needed 2015-11-10T00:36:30.807

3 Unusual rock identification needed 2015-11-26T13:15:40.610

3 Ions & elements, which is the correct terminology to use when discussing chemical compounds in Earth Science? 2016-07-22T10:33:52.997

3 How Common is Volcanic Tuff? 2016-07-31T03:51:06.023

3 When metamorphic rocks undergo pressure, how are they changed? 2017-01-09T14:07:54.110

3 Looking for rock identification 2017-02-25T04:20:11.257

3 What rock is this that I found on beach? 2017-04-26T15:28:37.660

3 Unidentified black spherical rock 2017-05-31T13:26:32.377

3 Can you Identify this? 2017-06-21T11:32:33.883

3 Odd Inuksuk-like objects 2017-07-01T20:59:20.373

3 A few questions about glass 2017-09-09T09:38:53.830

3 Where are the oldest igneous rocks found? 2017-10-08T14:54:52.000

3 What is this rock I found being sold in a store? 2017-11-07T08:15:54.773