J.G. Crock

2.8k citations

77 papers · 1.9k · h-index 22

Impact in

Geochemistry and Petrology top 1%
- Geochemistry and Elemental Analysis
Pollution top 2%
- Heavy metals in environment

Papers in

Artificial Intelligence 24
- Geochemistry and Geologic Mapping 24
Pollution 15
- Heavy metals in environment 15

Co-authors: Frederick E. Lichte (8 shared papers)Allen L. Meier (6 shared papers)Gene E. Likens (1 shared paper)John W. Fitzpatrick (1 shared paper)R.C. Severson (12 shared papers)John Gray (3 shared papers)D.L. Fey (6 shared papers)T. R. Wildeman (2 shared papers)
Journals: Analytical Chemistry (3 papers)American Mineralogist (2 papers)Analytical Letters (2 papers)The Auk (2 papers)Ecotoxicology and Environmental Safety (1 paper)
Partner nations: United States Poland Canada

In The Last Decade

J.G. Crock

74 papers receiving 1.6k citations

Peers

Replace R. Fuge with:

R. Fuge United Kingdom

H. J. Tobschall Germany

Ashley T. Townsend Australia

Norbert Miekeley Brazil

Zhengyu Bao China

H.P. Longerich Canada

Kristin J. Orians Canada

Katharina Kreissig United Kingdom

Jean‐Luc Seidel France

Christophe R. Quétel Belgium

J.G. Crock relative to R. Fuge United Kingdom R. Fuge's profile →

Citations per field

00.5×1.5×2.1×

R. Fuge · 1×

×1.1 410/386

GP

×1.4 529/382

POLLU

×1.7 497/296

HTM

×1.7 348/203

AC

×2.1 282/133

IC

Citations per year

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Countries citing papers authored by J.G. Crock

Since Specialization

Citations

This map shows the geographic impact of J.G. Crock's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by J.G. Crock with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J.G. Crock more than expected).

Fields of papers citing papers by J.G. Crock

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J.G. Crock. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by J.G. Crock. The network helps show where J.G. Crock may publish in the future.

Co-authors

The 25 scholars most cited alongside J.G. Crock, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with J.G. Crock Line = papers co-authored together J.G. Crock links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 77 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Determination of the rare-earth elements in geological materials by inductively coupled plasma mass spectrometry Analytical Chemistry ·Frederick E. Lichte, Allen L. Meier, J.G. Crock	1987	235
2	Cadmium toxicity among wildlife in the Colorado Rocky Mountains Nature ·James R. Larison, Gene E. Likens, John W. Fitzpatrick, J.G. Crock	2000	204
3	Determination of rare earth elements in geological materials by inductively coupled argon plasma/atomic emission spectrometry Analytical Chemistry ·J.G. Crock, Frederick E. Lichte	1982	165
4	Wildfires threaten mercury stocks in northern soils Geophysical Research Letters ·Merritt R. Turetsky, J. W. Harden, H. Friedli, Mike Flannigan, Nicholas J. Payne, J.G. Crock, Lawrence F. Radke	2006	111
5	The group separation of the rare-earth elements and yttrium from geologic materials by cation-exchange chromatography Chemical Geology ·J.G. Crock, Frederick E. Lichte, T. R. Wildeman	1984	78
6	Determination of Elements in National Bureau of Standards' Geological Reference Materials SRM 278 Obsidian and SRM 688 Basalt by Inductively Coupled Argon Plasma‐Atomic Emission Spectrometry Geostandards and Geoanalytical Research ·J.G. Crock, Frederick E. Lichte, P. H. Briggs	1983	77
7	Environmental geochemistry of abandoned mercury mines in West-Central Nevada, USA Applied Geochemistry ·John Gray, J.G. Crock, D.L. Fey	2002	76
8	In Vitro Studies Evaluating Leaching of Mercury from Mine Waste Calcine Using Simulated Human Body Fluids Environmental Science & Technology ·John Gray, Geoffrey S. Plumlee, Suzette A. Morman, Pablo Higueras, J.G. Crock, Heather Lowers, Mark L. Witten	2010	72
9	Arsenic, Cadmium, Lead, and Mercury in surface soils, Pueblo, Colorado: implications for population health risk Environmental Geochemistry and Health ·Moussa M. Diawara, Jill Litt, Dave Unis, Nicholas A. Alfonso, LeeAnne Martinez, J.G. Crock, David B. Smith, James S. Carsella	2006	71
10	Four reference soil and rock samples for measuring element availability in the Western Energy Regions U.S. Geological Survey circular ·J.G. Crock, R.C. Severson	1980	64
11	Separation and preconcentration of the rare-earth elements and yttrium from geological materials by ion-exchange and sequential acid elution Talanta ·J.G. Crock	1986	63
12	Interspecies and interregional comparisons of the chemistry of PAHs and trace elements in mosses Hylocomium splendens (Hedw.) B.S.G. and Pleurozium schreberi (Brid.) Mitt. from Poland and Alaska Atmospheric Environment ·Zdzisław M. Migaszewski, Agnieszka Gałuszka, J.G. Crock, Paul J. Lamothe, Sabina Dołęgowska	2008	61
13	Rare earth elements in the phosphatic-enriched sediment of the Peru shelf Marine Geology ·David Z. Piper, P. A. Baedecker, J.G. Crock, William C. Burnett, Benny Loebner	1988	53
14	Sea-floor massive sulfide deposits from 21 degrees N East Pacific Rise, Juan de Fuca Ridge, and Galapagos Rift; bulk chemical composition and economic implications Economic Geology ·James L. Bischoff, Robert J. Rosenbauer, P. J. Aruscavage, P. A. Baedecker, J.G. Crock	1983	49
15	An improved method for the determination of trace levels of arsenic and antimony in geological materials by automated hydride generation—atomic absorption spectroscopy Analytica Chimica Acta ·J.G. Crock, Frederick E. Lichte	1982	45
16	Use of naturally occurring mercury to determine the importance of cutthroat trout to Yellowstone grizzly bears Canadian Journal of Zoology ·Laura Felicetti, Charles C. Schwartz, Robert O. Rye, Kerry A. Gunther, J.G. Crock, Mark A. Haroldson, Lisette P. Waits, Charles T. Robbins	2004	44
17	Determination of Mercury in Geological Materials by Continuous-Flow, Cold-Vapor, Atomic Absorption Spectrophotometry Analytical Letters ·K.R. Kennedy, J.G. Crock	1987	39
18	Minasgeraisite, a new member of the gadolinite group from Minas Gerais, Brazil American Mineralogist ·Eugene E. Foord, Richard V. Gaines, J.G. Crock, William B. Simmons, Carlos P. Barbosa	1986	26
19	Mercury methylation at mercury mines in the Humboldt River Basin, Nevada, USA Geochemistry Exploration Environment Analysis ·John Gray, J.G. Crock, Brenda K. Lasorsa	2002	26
20	Exposure of insects and insectivorous birds to metals and other elements from abandoned mine tailings in three Summit County drainages, Colorado Environmental Monitoring and Assessment ·Christine M. Custer, (unknown), J.G. Crock, Valerie Shearn-Bochsler, Kathleen S. Smith, Phillip L. Hageman	2008	26

About J.G. Crock

J.G. Crock is a scholar working on Artificial Intelligence, Pollution, Ecology, Water Science and Technology and Geochemistry and Petrology, having authored 77 papers that have together received 1.9k indexed citations. Recurring topics across this work include Geochemistry and Geologic Mapping (24 papers), Heavy metals in environment (15 papers), Water Quality and Resources Studies (14 papers), Analytical chemistry methods development (12 papers), Mercury impact and mitigation studies (11 papers), Lichen and fungal ecology (7 papers), Geology and Paleoclimatology Research (7 papers) and Radioactive element chemistry and processing (7 papers). The work is most often cited by research in Geochemistry and Petrology (410 citations), Pollution (529 citations), Health, Toxicology and Mutagenesis (497 citations), Analytical Chemistry (348 citations) and Inorganic Chemistry (282 citations). J.G. Crock has collaborated with scholars based in United States, Poland and Canada. Frequent co-authors include Frederick E. Lichte, Allen L. Meier, Gene E. Likens, John W. Fitzpatrick, R.C. Severson, John Gray, D.L. Fey, T. R. Wildeman, Paul H. Briggs and P. A. Baedecker. Their work appears in journals such as Analytical Chemistry, American Mineralogist, Analytical Letters, The Auk and Ecotoxicology and Environmental Safety.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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J.G. Crock

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