Earth science (Simple English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Earth science" in Simple English language version.

Last modified: 12:06:17, 26 July 2026 (UTC)

Ref.Un. Ref.Website

Global rank Simple English rank

1312archive.org

6^th place

3^rd place

99doi.org

2^nd place

77adsabs.harvard.edu

14^th place

17^th place

77worldcat.org

4^th place

6^th place

77usgs.gov

119^th place

44^th place

66noaa.gov

111^th place

52^nd place

44libretexts.org

4,683^rd place

423^rd place

44nasa.gov

12^th place

39^th place

33web.archive.org

1^st place

33nationalgeographic.org

4,068^th place

754^th place

33nih.gov

5^th place

22princeton.edu

802^nd place

596^th place

22opengeology.org

low place

22britannica.com

37^th place

16^th place

22hawaii.edu

1,313^th place

699^th place

22wiley.com

150^th place

159^th place

22nature.com

207^th place

117^th place

22umn.edu

1,293^rd place

675^th place

22science.org

1,007^th place

903^rd place

21tamu.edu

289^th place

1,366^th place

11cambridge.org

209^th place

148^th place

11australian.museum

7,683^rd place

2,064^th place

11bgs.ac.uk

6,674^th place

4,768^th place

11fiveable.me

low place

11ebsco.com

3,424^th place

1,190^th place

11sjsu.edu

7,460^th place

2,478^th place

11grida.no

9,066^th place

6,001^st place

11nau.edu

low place

6,379^th place

11youtube.com

13^th place

23^rd place

adsabs.harvard.edu (Global: 14^th place; Simple English: 17^th place)

ui.adsabs.harvard.edu

Isacks, Bryan; Oliver, Jack; Sykes, Lynn R. (1968). "Seismology and the new global tectonics". Journal of Geophysical Research (1896-1977). 73 (18): 5855–5899. Bibcode:1968JGR....73.5855I. doi:10.1029/JB073i018p05855. ISSN 2156-2202.
Glatzmaiers, Gary A.; Roberts, Paul H. (1995). "A three-dimensional self-consistent computer simulation of a geomagnetic field reversal". Nature. 377 (6546): 203–209. Bibcode:1995Natur.377..203G. doi:10.1038/377203a0. ISSN 1476-4687.
Dziewonski, Adam M.; Anderson, Don L. (1981-06-01). "Preliminary reference Earth model". Physics of the Earth and Planetary Interiors. 25 (4): 297–356. Bibcode:1981PEPI...25..297D. doi:10.1016/0031-9201(81)90046-7. ISSN 0031-9201.
Bird, Peter (2003). "An updated digital model of plate boundaries". Geochemistry, Geophysics, Geosystems. 4 (3) 2001GC000252. Bibcode:2003GGG.....4.1027B. doi:10.1029/2001GC000252. ISSN 1525-2027.
Wilde, Simon A.; Valley, John W.; Peck, William H.; Graham, Colin M. (2001). "Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago". Nature. 409 (6817): 175–178. Bibcode:2001Natur.409..175W. doi:10.1038/35051550. ISSN 1476-4687. PMID 11196637.
Alvarez, Luis W.; Alvarez, Walter; Asaro, Frank; Michel, Helen V. (1980-06-06). "Extraterrestrial Cause for the Cretaceous-Tertiary Extinction". Science. 208 (4448): 1095–1108. Bibcode:1980Sci...208.1095A. doi:10.1126/science.208.4448.1095. ISSN 0036-8075. PMID 17783054.
Schulte, Peter; Alegret, Laia; Arenillas, Ignacio; Arz, José A.; Barton, Penny J.; Bown, Paul R.; Bralower, Timothy J.; Christeson, Gail L.; Claeys, Philippe; Cockell, Charles S.; Collins, Gareth S. (2010-03-05). "The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary". Science. 327 (5970): 1214–1218. Bibcode:2010Sci...327.1214S. doi:10.1126/science.1177265. ISSN 0036-8075. PMID 20203042.

archive.org (Global: 6^th place; Simple English: 3^rd place)

Enger, Eldon D.; Smith, Bradley F., eds. (2013). Environmental science: a study of interrelationships (13th ed.). Dubuque: McGraw-Hill. ISBN 978-0-07-338327-9.
Marsh, William M.; Kaufman, Martin M. (2013). Physical geography: great systems and global environments. Cambridge ; New York: Cambridge University Press. ISBN 978-0-521-76428-5.
Sheriff, Robert E. (1991). Encyclopedic dictionary of exploration geophysics. Geophysical references series. Society of Exploration Geophysicists (3rd ed.). Tulsa, OK: Society of Exploration Geophysicists. ISBN 978-1-56080-018-7.
Albarède, Francis; Hofmann, Albrecht W. (2008). Geochemistry: an introduction (6. print ed.). Cambridge: Cambridge Univ. Press. ISBN 978-0-521-89148-6.
Press, Frank, ed. (2004). Understanding earth (4th ed.). New York: Freeman. ISBN 978-0-7167-9617-6.
Fowler, C. M. R. (2005). The solid earth: an introduction to global geophysics (2nd ed.). Cambridge, UK ; New York: Cambridge University Press. ISBN 978-0-521-89307-7.
Dalrymple, G. Brent (1991). The age of the earth. Stanford, Calif: Stanford University Press. ISBN 978-0-8047-1569-0.
Prothero, Donald R. (2013). Bringing fossils to life: an introduction to paleobiology (3rd ed.). New York: Columbia University Press. ISBN 978-0-231-15892-3.
Faure, Gunter; Mensing, Teresa M.; Faure, Gunter (2005). Isotopes: principles and applications (3rd ed.). Hoboken, N.J: Wiley. ISBN 978-0-471-38437-3.
Gradstein, F. M., ed. (2012). The geologic time scale 2012 (1st ed.). Amsterdam ; Boston: Elsevier. ISBN 978-0-444-59425-9.
Trujillo, Alan P.; Thurman, Harold V. (2019). Essentials of oceanography (13th ed.). Boston: Pearson. ISBN 978-0-13-407354-5.
Talley, Lynne D.; Pickard, George L.; Emery, William J., eds. (2011). Descriptive physical oceanography: an introduction (6th ed.). Amsterdam ; Boston: Academic Press. ISBN 978-0-7506-4552-2.

australian.museum (Global: 7,683^rd place; Simple English: 2,064^th place)

"Mineral properties". The Australian Museum. Retrieved 2025-07-24.

bgs.ac.uk (Global: 6,674^th place; Simple English: 4,768^th place)

"Types of volcano". British Geological Survey. Retrieved 2025-07-24.

britannica.com (Global: 37^th place; Simple English: 16^th place)

"Continental crust | Composition, Density, & Definition | Britannica". www.britannica.com. Retrieved 2025-07-24.
"Mountain | Definition, Characteristics, Types, & Facts | Britannica". www.britannica.com. 2025-07-04. Retrieved 2025-07-24.

cambridge.org (Global: 209^th place; Simple English: 148^th place)

Schubert, Gerald; Turcotte, Donald L.; Olson, Peter (2001-09-24). Mantle Convection in the Earth and Planets (1 ed.). Cambridge University Press. doi:10.1017/cbo9780511612879. ISBN 978-0-521-35367-0.

doi.org (Global: 2^nd place; Simple English: 2^nd place)

doi.org

Schubert, Gerald; Turcotte, Donald L.; Olson, Peter (2001-09-24). Mantle Convection in the Earth and Planets (1 ed.). Cambridge University Press. doi:10.1017/cbo9780511612879. ISBN 978-0-521-35367-0.
Isacks, Bryan; Oliver, Jack; Sykes, Lynn R. (1968). "Seismology and the new global tectonics". Journal of Geophysical Research (1896-1977). 73 (18): 5855–5899. Bibcode:1968JGR....73.5855I. doi:10.1029/JB073i018p05855. ISSN 2156-2202.
Glatzmaiers, Gary A.; Roberts, Paul H. (1995). "A three-dimensional self-consistent computer simulation of a geomagnetic field reversal". Nature. 377 (6546): 203–209. Bibcode:1995Natur.377..203G. doi:10.1038/377203a0. ISSN 1476-4687.
Dziewonski, Adam M.; Anderson, Don L. (1981-06-01). "Preliminary reference Earth model". Physics of the Earth and Planetary Interiors. 25 (4): 297–356. Bibcode:1981PEPI...25..297D. doi:10.1016/0031-9201(81)90046-7. ISSN 0031-9201.
Bird, Peter (2003). "An updated digital model of plate boundaries". Geochemistry, Geophysics, Geosystems. 4 (3) 2001GC000252. Bibcode:2003GGG.....4.1027B. doi:10.1029/2001GC000252. ISSN 1525-2027.
Wilde, Simon A.; Valley, John W.; Peck, William H.; Graham, Colin M. (2001). "Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago". Nature. 409 (6817): 175–178. Bibcode:2001Natur.409..175W. doi:10.1038/35051550. ISSN 1476-4687. PMID 11196637.
Alvarez, Luis W.; Alvarez, Walter; Asaro, Frank; Michel, Helen V. (1980-06-06). "Extraterrestrial Cause for the Cretaceous-Tertiary Extinction". Science. 208 (4448): 1095–1108. Bibcode:1980Sci...208.1095A. doi:10.1126/science.208.4448.1095. ISSN 0036-8075. PMID 17783054.
Schulte, Peter; Alegret, Laia; Arenillas, Ignacio; Arz, José A.; Barton, Penny J.; Bown, Paul R.; Bralower, Timothy J.; Christeson, Gail L.; Claeys, Philippe; Cockell, Charles S.; Collins, Gareth S. (2010-03-05). "The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary". Science. 327 (5970): 1214–1218. Bibcode:2010Sci...327.1214S. doi:10.1126/science.1177265. ISSN 0036-8075. PMID 20203042.

dx.doi.org

Dziewonski, Adam M.; Anderson, Don L. (1981-06-01). "Preliminary reference Earth model". Physics of the Earth and Planetary Interiors. 25 (4): 297–356. Bibcode:1981PEPI...25..297D. doi:10.1016/0031-9201(81)90046-7. ISSN 0031-9201.

ebsco.com (Global: 3,424^th place; Simple English: 1,190^th place)

"Deep Ocean Currents | EBSCO Research Starters". www.ebsco.com. Retrieved 2025-07-26.

fiveable.me (Global: low place; Simple English: low place)

library.fiveable.me

"Essential Oceanographic Instruments to Know for Marine Biology". library.fiveable.me. Retrieved 2025-07-26.

grida.no (Global: 9,066^th place; Simple English: 6,001^st place)

"Ocean carbon cycle". GRID-Arendal. 5 June 2009. Retrieved 18 January 2022.

hawaii.edu (Global: 1,313^th place; Simple English: 699^th place)

manoa.hawaii.edu

"The Oceanic Crust and Seafloor". manoa.hawaii.edu. Retrieved 2025-07-24.
"Ocean Surface Currents". manoa.hawaii.edu. Retrieved 2025-07-26.

libretexts.org (Global: 4,683^rd place; Simple English: 423^rd place)

geo.libretexts.org

"1.2: Earth Science and Its Branches". Geosciences LibreTexts. 2021-01-14. Retrieved 2025-07-26.
"2.6: Classes of Minerals". Geosciences LibreTexts. 2016-12-29. Retrieved 2025-07-24.
"4.3: Weathering". Geosciences LibreTexts. 2017-01-04. Retrieved 2025-07-24.
"9.2: Mountain Formation". Geosciences LibreTexts. 2021-01-14. Retrieved 2025-07-24.

nasa.gov (Global: 12^th place; Simple English: 39^th place)

science.nasa.gov

"The Great Dying - NASA Science". 2002-01-27. Retrieved 2025-07-25.
"Tides - NASA Science". 2023-06-06. Retrieved 2025-07-26.

eol.jsc.nasa.gov

"Gateway to Astronaut Photos of Earth". NASA. Retrieved 2018-01-29.

soil.gsfc.nasa.gov

"Elissa Levine, 2001, The Pedosphere As A Hub". Archived from the original on 2007-10-30. Retrieved 2010-10-09.

nationalgeographic.org (Global: 4,068^th place; Simple English: 754^th place)

education.nationalgeographic.org

"Oceanography". education.nationalgeographic.org. Retrieved 2025-07-26.
"The Science and Art of Meteorology". education.nationalgeographic.org. Retrieved 2025-07-26.
"Upwelling". education.nationalgeographic.org. Retrieved 2025-07-26.

nature.com (Global: 207^th place; Simple English: 117^th place)

Glatzmaiers, Gary A.; Roberts, Paul H. (1995). "A three-dimensional self-consistent computer simulation of a geomagnetic field reversal". Nature. 377 (6546): 203–209. Bibcode:1995Natur.377..203G. doi:10.1038/377203a0. ISSN 1476-4687.
Wilde, Simon A.; Valley, John W.; Peck, William H.; Graham, Colin M. (2001). "Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago". Nature. 409 (6817): 175–178. Bibcode:2001Natur.409..175W. doi:10.1038/35051550. ISSN 1476-4687. PMID 11196637.

nau.edu (Global: low place; Simple English: 6,379^th place)

jan.ucc.nau.edu

"Duane Gardiner, Lecture: Why study soils? excerpted from Miller R.W. & D.T. Gardiner, 1998. Soils in our environment, 8th Edition". Archived from the original on 2018-02-09. Retrieved 2010-10-09.

nih.gov (Global: 5^th place; Simple English: 5^th place)

pubmed.ncbi.nlm.nih.gov

Wilde, Simon A.; Valley, John W.; Peck, William H.; Graham, Colin M. (2001). "Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago". Nature. 409 (6817): 175–178. Bibcode:2001Natur.409..175W. doi:10.1038/35051550. ISSN 1476-4687. PMID 11196637.
Alvarez, Luis W.; Alvarez, Walter; Asaro, Frank; Michel, Helen V. (1980-06-06). "Extraterrestrial Cause for the Cretaceous-Tertiary Extinction". Science. 208 (4448): 1095–1108. Bibcode:1980Sci...208.1095A. doi:10.1126/science.208.4448.1095. ISSN 0036-8075. PMID 17783054.
Schulte, Peter; Alegret, Laia; Arenillas, Ignacio; Arz, José A.; Barton, Penny J.; Bown, Paul R.; Bralower, Timothy J.; Christeson, Gail L.; Claeys, Philippe; Cockell, Charles S.; Collins, Gareth S. (2010-03-05). "The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary". Science. 327 (5970): 1214–1218. Bibcode:2010Sci...327.1214S. doi:10.1126/science.1177265. ISSN 0036-8075. PMID 20203042.

noaa.gov (Global: 111^th place; Simple English: 52^nd place)

oceanservice.noaa.gov

US Department of Commerce, National Oceanic and Atmospheric Administration. "Surface Ocean Currents - Currents: NOAA's National Ocean Service Education". oceanservice.noaa.gov. Retrieved 2025-07-26.
US Department of Commerce, National Oceanic and Atmospheric Administration. "Thermohaline Circulation - Currents: NOAA's National Ocean Service Education". oceanservice.noaa.gov. Retrieved 2025-07-26.
US Department of Commerce, National Oceanic and Atmospheric Administration. "What are tides?". oceanservice.noaa.gov. Retrieved 2025-07-26.
"What is upwelling?". oceanservice.noaa.gov. Retrieved 2025-07-26.
NOAA National Ocean Service Education: Geodesy

oceanexplorer.noaa.gov

"What causes ocean waves? : Ocean Exploration Facts: NOAA Ocean Exploration". oceanexplorer.noaa.gov. Retrieved 2025-07-26.

opengeology.org (Global: low place; Simple English: low place)

"1 Understanding Science – An Introduction to Geology". Retrieved 2025-07-26.
"1 Introduction to Petrology – Open Petrology". Retrieved 2025-07-24.

princeton.edu (Global: 802^nd place; Simple English: 596^th place)

wordnet.princeton.edu

"Wordnet Search: Earth science". Archived from the original on 2020-04-10. Retrieved 2010-10-09.
Wordnet Search: Geodesy^{[permanent dead link]}

science.org (Global: 1,007^th place; Simple English: 903^rd place)

Alvarez, Luis W.; Alvarez, Walter; Asaro, Frank; Michel, Helen V. (1980-06-06). "Extraterrestrial Cause for the Cretaceous-Tertiary Extinction". Science. 208 (4448): 1095–1108. Bibcode:1980Sci...208.1095A. doi:10.1126/science.208.4448.1095. ISSN 0036-8075. PMID 17783054.
Schulte, Peter; Alegret, Laia; Arenillas, Ignacio; Arz, José A.; Barton, Penny J.; Bown, Paul R.; Bralower, Timothy J.; Christeson, Gail L.; Claeys, Philippe; Cockell, Charles S.; Collins, Gareth S. (2010-03-05). "The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary". Science. 327 (5970): 1214–1218. Bibcode:2010Sci...327.1214S. doi:10.1126/science.1177265. ISSN 0036-8075. PMID 20203042.

sjsu.edu (Global: 7,460^th place; Simple English: 2,478^th place)

mlml.sjsu.edu

"Internal Waves in Monterey Bay – Physical Oceanography". mlml.sjsu.edu. Retrieved 2025-07-26.

tamu.edu (Global: 289^th place; Simple English: 1,366^th place)

artsci.tamu.edu

"What is Oceanography?". artsci.tamu.edu. Retrieved 2025-07-26.

umn.edu (Global: 1,293^rd place; Simple English: 675^th place)

commonminerals.esci.umn.edu

"Quartz | Common Minerals". commonminerals.esci.umn.edu. Retrieved 2025-07-24.
"Calcite (and Aragonite) | Common Minerals". commonminerals.esci.umn.edu. Retrieved 2025-07-24.

usgs.gov (Global: 119^th place; Simple English: 44^th place)

usgs.gov

"What are igneous rocks? | U.S. Geological Survey". www.usgs.gov. 2022-12-31. Retrieved 2025-07-24.
"What are sedimentary rocks? | U.S. Geological Survey". www.usgs.gov. 2023-12-31. Retrieved 2025-07-24.
"What are metamorphic rocks? | U.S. Geological Survey". www.usgs.gov. 2023-12-31. Retrieved 2025-07-24.
"About Volcanoes | U.S. Geological Survey". www.usgs.gov. Retrieved 2025-07-24.
"The Science of Earthquakes | U.S. Geological Survey". www.usgs.gov. Retrieved 2025-07-24.
"Moment magnitude, Richter scale - what are the different magnitude scales, and why are there so many? | U.S. Geological Survey". www.usgs.gov. 2024-01-10. Retrieved 2025-07-24.

pubs.usgs.gov

"Understanding plate motions [This Dynamic Earth, USGS]". pubs.usgs.gov. Retrieved 2025-07-24.

web.archive.org (Global: 1^st place; Simple English: 1^st place)

"Wordnet Search: Earth science". Archived from the original on 2020-04-10. Retrieved 2010-10-09.
"Elissa Levine, 2001, The Pedosphere As A Hub". Archived from the original on 2007-10-30. Retrieved 2010-10-09.
"Duane Gardiner, Lecture: Why study soils? excerpted from Miller R.W. & D.T. Gardiner, 1998. Soils in our environment, 8th Edition". Archived from the original on 2018-02-09. Retrieved 2010-10-09.

wiley.com (Global: 150^th place; Simple English: 159^th place)

onlinelibrary.wiley.com

Isacks, Bryan; Oliver, Jack; Sykes, Lynn R. (1968). "Seismology and the new global tectonics". Journal of Geophysical Research (1896-1977). 73 (18): 5855–5899. Bibcode:1968JGR....73.5855I. doi:10.1029/JB073i018p05855. ISSN 2156-2202.
Bird, Peter (2003). "An updated digital model of plate boundaries". Geochemistry, Geophysics, Geosystems. 4 (3) 2001GC000252. Bibcode:2003GGG.....4.1027B. doi:10.1029/2001GC000252. ISSN 1525-2027.

worldcat.org (Global: 4^th place; Simple English: 6^th place)

search.worldcat.org

Isacks, Bryan; Oliver, Jack; Sykes, Lynn R. (1968). "Seismology and the new global tectonics". Journal of Geophysical Research (1896-1977). 73 (18): 5855–5899. Bibcode:1968JGR....73.5855I. doi:10.1029/JB073i018p05855. ISSN 2156-2202.
Glatzmaiers, Gary A.; Roberts, Paul H. (1995). "A three-dimensional self-consistent computer simulation of a geomagnetic field reversal". Nature. 377 (6546): 203–209. Bibcode:1995Natur.377..203G. doi:10.1038/377203a0. ISSN 1476-4687.
Dziewonski, Adam M.; Anderson, Don L. (1981-06-01). "Preliminary reference Earth model". Physics of the Earth and Planetary Interiors. 25 (4): 297–356. Bibcode:1981PEPI...25..297D. doi:10.1016/0031-9201(81)90046-7. ISSN 0031-9201.
Bird, Peter (2003). "An updated digital model of plate boundaries". Geochemistry, Geophysics, Geosystems. 4 (3) 2001GC000252. Bibcode:2003GGG.....4.1027B. doi:10.1029/2001GC000252. ISSN 1525-2027.
Wilde, Simon A.; Valley, John W.; Peck, William H.; Graham, Colin M. (2001). "Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago". Nature. 409 (6817): 175–178. Bibcode:2001Natur.409..175W. doi:10.1038/35051550. ISSN 1476-4687. PMID 11196637.
Alvarez, Luis W.; Alvarez, Walter; Asaro, Frank; Michel, Helen V. (1980-06-06). "Extraterrestrial Cause for the Cretaceous-Tertiary Extinction". Science. 208 (4448): 1095–1108. Bibcode:1980Sci...208.1095A. doi:10.1126/science.208.4448.1095. ISSN 0036-8075. PMID 17783054.
Schulte, Peter; Alegret, Laia; Arenillas, Ignacio; Arz, José A.; Barton, Penny J.; Bown, Paul R.; Bralower, Timothy J.; Christeson, Gail L.; Claeys, Philippe; Cockell, Charles S.; Collins, Gareth S. (2010-03-05). "The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary". Science. 327 (5970): 1214–1218. Bibcode:2010Sci...327.1214S. doi:10.1126/science.1177265. ISSN 0036-8075. PMID 20203042.

youtube.com (Global: 13^th place; Simple English: 23^rd place)

CrashCourse (2015-01-15), Introduction to Astronomy: Crash Course Astronomy #1, retrieved 2017-11-27

Earth science (Simple English Wikipedia)

adsabs.harvard.edu (Global: 14th place; Simple English: 17th place)

ui.adsabs.harvard.edu

archive.org (Global: 6th place; Simple English: 3rd place)

australian.museum (Global: 7,683rd place; Simple English: 2,064th place)

bgs.ac.uk (Global: 6,674th place; Simple English: 4,768th place)

britannica.com (Global: 37th place; Simple English: 16th place)

cambridge.org (Global: 209th place; Simple English: 148th place)

doi.org (Global: 2nd place; Simple English: 2nd place)

doi.org

dx.doi.org

ebsco.com (Global: 3,424th place; Simple English: 1,190th place)

fiveable.me (Global: low place; Simple English: low place)

library.fiveable.me

grida.no (Global: 9,066th place; Simple English: 6,001st place)

hawaii.edu (Global: 1,313th place; Simple English: 699th place)

manoa.hawaii.edu

libretexts.org (Global: 4,683rd place; Simple English: 423rd place)

geo.libretexts.org

nasa.gov (Global: 12th place; Simple English: 39th place)

science.nasa.gov

eol.jsc.nasa.gov

soil.gsfc.nasa.gov

nationalgeographic.org (Global: 4,068th place; Simple English: 754th place)

education.nationalgeographic.org

nature.com (Global: 207th place; Simple English: 117th place)

nau.edu (Global: low place; Simple English: 6,379th place)

jan.ucc.nau.edu

nih.gov (Global: 5th place; Simple English: 5th place)

pubmed.ncbi.nlm.nih.gov

noaa.gov (Global: 111th place; Simple English: 52nd place)

oceanservice.noaa.gov

oceanexplorer.noaa.gov

opengeology.org (Global: low place; Simple English: low place)

princeton.edu (Global: 802nd place; Simple English: 596th place)

wordnet.princeton.edu

science.org (Global: 1,007th place; Simple English: 903rd place)

sjsu.edu (Global: 7,460th place; Simple English: 2,478th place)

mlml.sjsu.edu

tamu.edu (Global: 289th place; Simple English: 1,366th place)

artsci.tamu.edu

umn.edu (Global: 1,293rd place; Simple English: 675th place)

commonminerals.esci.umn.edu

usgs.gov (Global: 119th place; Simple English: 44th place)

usgs.gov

pubs.usgs.gov

web.archive.org (Global: 1st place; Simple English: 1st place)

wiley.com (Global: 150th place; Simple English: 159th place)

onlinelibrary.wiley.com

worldcat.org (Global: 4th place; Simple English: 6th place)

search.worldcat.org

youtube.com (Global: 13th place; Simple English: 23rd place)

adsabs.harvard.edu (Global: 14^th place; Simple English: 17^th place)

archive.org (Global: 6^th place; Simple English: 3^rd place)

australian.museum (Global: 7,683^rd place; Simple English: 2,064^th place)

bgs.ac.uk (Global: 6,674^th place; Simple English: 4,768^th place)

britannica.com (Global: 37^th place; Simple English: 16^th place)

cambridge.org (Global: 209^th place; Simple English: 148^th place)

doi.org (Global: 2^nd place; Simple English: 2^nd place)

ebsco.com (Global: 3,424^th place; Simple English: 1,190^th place)

grida.no (Global: 9,066^th place; Simple English: 6,001^st place)

hawaii.edu (Global: 1,313^th place; Simple English: 699^th place)

libretexts.org (Global: 4,683^rd place; Simple English: 423^rd place)

nasa.gov (Global: 12^th place; Simple English: 39^th place)

nationalgeographic.org (Global: 4,068^th place; Simple English: 754^th place)

nature.com (Global: 207^th place; Simple English: 117^th place)

nau.edu (Global: low place; Simple English: 6,379^th place)

nih.gov (Global: 5^th place; Simple English: 5^th place)

noaa.gov (Global: 111^th place; Simple English: 52^nd place)

princeton.edu (Global: 802^nd place; Simple English: 596^th place)

science.org (Global: 1,007^th place; Simple English: 903^rd place)

sjsu.edu (Global: 7,460^th place; Simple English: 2,478^th place)

tamu.edu (Global: 289^th place; Simple English: 1,366^th place)

umn.edu (Global: 1,293^rd place; Simple English: 675^th place)

usgs.gov (Global: 119^th place; Simple English: 44^th place)

web.archive.org (Global: 1^st place; Simple English: 1^st place)

wiley.com (Global: 150^th place; Simple English: 159^th place)

worldcat.org (Global: 4^th place; Simple English: 6^th place)

youtube.com (Global: 13^th place; Simple English: 23^rd place)