A. F. Trendall

The "geological unit" (g.u.)— A suggested new measure of geologic time
Geology 1991 v. 19, p. 195. [Abstract] [PDF]  

Paul R. Bierman and Alan R. Gillespie

Accuracy of rock-varnish chemical analyses: Implications for cation-ratio dating
Geology 1991 v. 19, p. 196-199. [Abstract] [PDF]  

C. A. Chesner, W. I. Rose, A. Deino, R. Drake, and J. A. Westgate

Eruptive history of Earth's largest Quaternary caldera (Toba, Indonesia) clarified
Geology 1991 v. 19, p. 200-203. [Abstract] [PDF]  

Ken Caldeira

Continental-pelagic carbonate partitioning and the global carbonate-silicate cycle
Geology 1991 v. 19, p. 204-206. [Abstract] [PDF]  

William F. Cannon, Myung W. Lee, W. J. Hinze, Klaus J. Schulz, and Alan G. Green

Deep crustal structure of the Precambrian basement beneath northern Lake Michigan, midcontinent North America
Geology 1991 v. 19, p. 207-210. [Abstract] [PDF]  

John M. Ferry and Gregory M. Dipple

Fluid flow, mineral reactions, and metasomatism
Geology 1991 v. 19, p. 211-214. [Abstract] [PDF]  

M. R. Palmer

Boron-isotope systematics of Halmahera arc (Indonesia) lavas: Evidence for involvement of the subducted slab
Geology 1991 v. 19, p. 215-217. [Abstract] [PDF]  

Lars Stemmerik, Jorunn Os Vigran, and Stefan Piasecki

Dating of late Paleozoic rifting events in the North Atlantic: New biostratigraphic data from the uppermost Devonian and Carboniferous of East Greenland
Geology 1991 v. 19, p. 218-221. [Abstract] [PDF]  

Peter P. McLaughlin, Jr. and Barun K. Sen Gupta

Migration of Neogene marine environments, southwestern Dominican Republic
Geology 1991 v. 19, p. 222-225. [Abstract] [PDF]  

Allen J. Dennis and John W. Shervais

Arc rifting of the Carolina terrane in northwestern South Carolina
Geology 1991 v. 19, p. 226-229. [Abstract] [PDF]  

Geoff Rait, Frank Chanier, and David W. Waters

Landward- and seaward-directed thrusting accompanying the onset of subduction beneath New Zealand
Geology 1991 v. 19, p. 230-233. [Abstract] [PDF]  

John Fournelle and Bruce D. Marsh

Shishaldin Volcano: Aleutian high-alumina basalts and the question of plagioclase accumulation
Geology 1991 v. 19, p. 234-237. [Abstract] [PDF]  

George E. Gehrels and Christine H. Smith

U-Pb geochronologic constraints on the age of thrusting, crustal extension, and peraluminous plutonism in the Little Rincon Mountains, southern Arizona
Geology 1991 v. 19, p. 238-241. [Abstract] [PDF]  

Bruce J. MacFadden, J. Daniel Bryant, and Paul A. Mueller

Sr-isotopic, paleomagnetic, and biostratigraphic calibration of horse evolution: Evidence from the Miocene of Florida
Geology 1991 v. 19, p. 242-245. [Abstract] [PDF]  

Mário V. Caputo

Solimões megashear: Intraplate tectonics in northwestern Brazil
Geology 1991 v. 19, p. 246-249. [Abstract] [PDF]  

Ben Kneller, Deborah Edwards, William McCaffrey, and Richard Moore

Oblique reflection of turbidity currents
Geology 1991 v. 19, p. 250-252. [Abstract] [PDF]  

J. M. Peter, P. Peltonen, S. D. Scott, B.R.T. Simoneit, and O. E. Kawka

¹⁴C ages of hydrothermal petroleum and carbonate in Guaymas Basin, Gulf of California: Implications for oil generation, expulsion, and migration
Geology 1991 v. 19, p. 253-256. [Abstract] [PDF]  

Nicholas Eyles and H. P. Schwarcz

Stable isotope record of the last glacial cycle from lacustrine ostracodes
Geology 1991 v. 19, p. 257-260. [Abstract] [PDF]  

Jean-Christophe Komorowski, Harry X. Glicken, and Michael F. Sheridan

Secondary electron imagery of microcracks and hackly fracture surfaces in sand-size clasts from the 1980 Mount St. Helens debris-avalanche deposit: Implications for particle-particle interactions
Geology 1991 v. 19, p. 261-264. [Abstract] [PDF]  

J. B. Maynard, S. D. Ritger, and S. J. Sutton

Chemistry of sands from the modern Indus River and the Archean Witwatersrand basin: Implications for the composition of the Archean atmosphere
Geology 1991 v. 19, p. 265-268. [Abstract] [PDF]  

C. Kent Brooks, Lotte Melchior Larsen, and Troels F.D. Nielsen

Importance of iron-rich tholeiitic magmas at divergent plate margins: A reappraisal
Geology 1991 v. 19, p. 269-272. [Abstract] [PDF]  

Ronald J. Litwin and Sidney R. Ash

First early Mesozoic amber in the Western Hemisphere
Geology 1991 v. 19, p. 273-276. [Abstract] [PDF]  

Timothy S. Woelk and William J. Hinze

Model of the midcontinent rift system in northeastern Kansas
Geology 1991 v. 19, p. 277-280. [Abstract] [PDF]  

Peter W. Birkeland, Margaret E. Berry, and David K. Swanson

Use of soil catena field data for estimating relative ages of moraines
Geology 1991 v. 19, p. 281-283. [Abstract] [PDF]  

Roger T. Saucier and Andrew W. Berg

Comment and Reply on "Formation of Mima mounds: A seismic hypothesis"
Geology 1991 v. 19, p. 284-285. [Abstract] [PDF]  

W. R. Church, Kevin P. Hefferan, Jeffrey A. Karson, Ali Saquaque, Hassan Admou, and Ingrid Reuber

Comment and Reply on "Precambrian accretionary tectonics in the Bou Azzer-El Graara region, Anti-Atlas, Morocco"
Geology 1991 v. 19, p. 285-287. [Abstract] [PDF]  

Letter
Geology 1991 v. 19, p. 287-288. [Abstract] [PDF]  

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