ARTICLE:

JOHN J. W. ROGERS, KIP V. HODGES, and MOHAMED A. GHUMA

Trace elements in continental-margin magmatism: Part II. Trace elements in Ben Ghnema batholith and nature of the Precambrian crust in central North Africa: Summary
Geological Society of America Bulletin 1980 v. 91, p. 445-447. [Abstract] [Full Text] [PDF]  

ROGER A. PRINCE, G. ROSS HEATH, and MICHELLE KOMINZ

Paleomagnetic studies of central North Pacific sediment cores: Stratigraphy, sedimentation rates, and the origin of magnetic instability: Summary
Geological Society of America Bulletin 1980 v. 91, p. 447-449. [Abstract] [Full Text] [PDF]  

D. K. LARUE and L. L. SLOSS

Early Proterozoic sedimentary basins of the Lake Superior region: Summary
Geological Society of America Bulletin 1980 v. 91, p. 450-452. [Abstract] [Full Text] [PDF]  

SUSAN M. CASHMAN

Devonian metamorphic event in the northeastern Klamath Mountains, California
Geological Society of America Bulletin 1980 v. 91, p. 453-459. [Abstract] [PDF]  

JOHN H. STEWART

Regional tilt patterns of late Cenozoic basin-range fault blocks, western United States
Geological Society of America Bulletin 1980 v. 91, p. 460-464. [Abstract] [PDF]  

ROBERT L. LAURY

Paleoenvironment of a late Quaternary mammoth-bearing sinkhole deposit, Hot Springs, South Dakota
Geological Society of America Bulletin 1980 v. 91, p. 465-475. [Abstract] [PDF]  

WALTER ALVAREZ, DENNIS V. KENT, ISABELLA PREMOLI SILVA, RICHARD A. SCHWEICKERT, and ROGER A. LARSON

Franciscan Complex limestone deposited at 17° South paleolatitude
Geological Society of America Bulletin 1980 v. 91, p. 476-484. [Abstract] [PDF]  

PETER A. RONA and DALE F. GRAY

Structural behavior of fracture zones symmetric and asymmetric about a spreading axis: Mid-Atlantic Ridge (latitude 23°N to 27°N)
Geological Society of America Bulletin 1980 v. 91, p. 485-494. [Abstract] [PDF]  

RICHARD W. OJAKANGAS and CHARLES L. MATSCH

Upper Precambrian (Eocambrian) Mineral Fork Tillite of Utah: A continental glacial and glaciomarine sequence
Geological Society of America Bulletin 1980 v. 91, p. 495-501. [Abstract] [PDF]  

MARK E. HALLIDAY and KENNETH L. COOK

Regional gravity survey, northern Marysvale volcanic field, south-central Utah
Geological Society of America Bulletin 1980 v. 91, p. 502-508. [Abstract] [PDF]  

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