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Volume 19, Number 3
March, 1991
Geology Cover Image for Volume 19, Issue 3
ISSN: 0091-7613
EISSN: 1943-2682
The "geological unit" (g.u.)— A suggested new measure of geologic time
A. F. Trendall
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Accuracy of rock-varnish chemical analyses: Implications for cation-ratio dating
Paul R. Bierman; Alan R. Gillespie
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Eruptive history of Earth's largest Quaternary caldera (Toba, Indonesia) clarified
C. A. Chesner; W. I. Rose; A. Deino; R. Drake; J. A. Westgate
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Continental-pelagic carbonate partitioning and the global carbonate-silicate cycle
Ken Caldeira
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Deep crustal structure of the Precambrian basement beneath northern Lake Michigan, midcontinent North America
William F. Cannon; Myung W. Lee; W. J. Hinze; Klaus J. Schulz; Alan G. Green
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Fluid flow, mineral reactions, and metasomatism
John M. Ferry; Gregory M. Dipple
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Boron-isotope systematics of Halmahera arc (Indonesia) lavas: Evidence for involvement of the subducted slab
M. R. Palmer
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Dating of late Paleozoic rifting events in the North Atlantic: New biostratigraphic data from the uppermost Devonian and Carboniferous of East Greenland
Lars Stemmerik; Jorunn Os Vigran; Stefan Piasecki
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Migration of Neogene marine environments, southwestern Dominican Republic
Peter P. McLaughlin, Jr.; Barun K. Sen Gupta
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Arc rifting of the Carolina terrane in northwestern South Carolina
Allen J. Dennis; John W. Shervais
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Landward- and seaward-directed thrusting accompanying the onset of subduction beneath New Zealand
Geoff Rait; Frank Chanier; David W. Waters
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Shishaldin Volcano: Aleutian high-alumina basalts and the question of plagioclase accumulation
John Fournelle; Bruce D. Marsh
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U-Pb geochronologic constraints on the age of thrusting, crustal extension, and peraluminous plutonism in the Little Rincon Mountains, southern Arizona
George E. Gehrels; Christine H. Smith
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Sr-isotopic, paleomagnetic, and biostratigraphic calibration of horse evolution: Evidence from the Miocene of Florida
Bruce J. MacFadden; J. Daniel Bryant; Paul A. Mueller
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Solimões megashear: Intraplate tectonics in northwestern Brazil
Mário V. Caputo
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Oblique reflection of turbidity currents
Ben Kneller; Deborah Edwards; William McCaffrey; Richard Moore
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14C ages of hydrothermal petroleum and carbonate in Guaymas Basin, Gulf of California: Implications for oil generation, expulsion, and migration
J. M. Peter; P. Peltonen; S. D. Scott; B.R.T. Simoneit; O. E. Kawka
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Stable isotope record of the last glacial cycle from lacustrine ostracodes
Nicholas Eyles; H. P. Schwarcz
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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 inte...
Jean-Christophe Komorowski; Harry X. Glicken; Michael F. Sheridan
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Chemistry of sands from the modern Indus River and the Archean Witwatersrand basin: Implications for the composition of the Archean atmosphere
J. B. Maynard; S. D. Ritger; S. J. Sutton
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Importance of iron-rich tholeiitic magmas at divergent plate margins: A reappraisal
C. Kent Brooks; Lotte Melchior Larsen; Troels F.D. Nielsen
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First early Mesozoic amber in the Western Hemisphere
Ronald J. Litwin; Sidney R. Ash
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Model of the midcontinent rift system in northeastern Kansas
Timothy S. Woelk; William J. Hinze
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Use of soil catena field data for estimating relative ages of moraines
Peter W. Birkeland; Margaret E. Berry; David K. Swanson
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Comment and Reply on "Formation of Mima mounds: A seismic hypothesis"
Roger T. Saucier; Andrew W. Berg
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Comment and Reply on "Precambrian accretionary tectonics in the Bou Azzer-El Graara region, Anti-Atlas, Morocco"
W. R. Church; Kevin P. Hefferan; Jeffrey A. Karson; Ali Saquaque; Hassan Admou; Ingrid Reuber
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Letter
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  • Online ISSN 1943-2682
  • ISSN 0091-7613
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