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Issues
Volume 85, Number 12
December, 1974

ISSN 0016-7606
EISSN 1943-2674
In this Issue
The Founding of Geology in America: 1771 to 1818
GSA Bulletin December 01, 1974, Vol.85, 1827-1834. doi:https://doi.org/10.1130/0016-7606(1974)85<1827:TFOGIA>2.0.CO;2
Evidence for Eolian Origin of Cross-Stratification in Sandstone of the Casper Formation, Southernmost Laramie Basin, Wyoming
GSA Bulletin December 01, 1974, Vol.85, 1835-1842. doi:https://doi.org/10.1130/0016-7606(1974)85<1835:EFEOOC>2.0.CO;2
Extinction of the Shasta Ground Sloth
GSA Bulletin December 01, 1974, Vol.85, 1843-1848. doi:https://doi.org/10.1130/0016-7606(1974)85<1843:EOTSGS>2.0.CO;2
Relict and Recent Beachrock from Southern Africa
GSA Bulletin December 01, 1974, Vol.85, 1849-1854. doi:https://doi.org/10.1130/0016-7606(1974)85<1849:RARBFS>2.0.CO;2
Experimental Test of Least-Squares Strain Gage Calculation Using Twinned Calcite
GSA Bulletin December 01, 1974, Vol.85, 1855-1864. doi:https://doi.org/10.1130/0016-7606(1974)85<1855:ETOLSG>2.0.CO;2
Squirrel Springs Volcano-Tectonic Depression: A Buried Cauldron in Southwestern New Mexico
GSA Bulletin December 01, 1974, Vol.85, 1865-1868. doi:https://doi.org/10.1130/0016-7606(1974)85<1865:SSVDAB>2.0.CO;2
Giant Stromatolites and Associated Vertical Tubes from the Upper Proterozoic Noonday Dolomite, Death Valley Region, Eastern California
GSA Bulletin December 01, 1974, Vol.85, 1869-1882. doi:https://doi.org/10.1130/0016-7606(1974)85<1869:GSAAVT>2.0.CO;2
Offset Plutons and History of Movement along the McKinley Segment of the Denali Fault System, Alaska
GSA Bulletin December 01, 1974, Vol.85, 1883-1892. doi:https://doi.org/10.1130/0016-7606(1974)85<1883:OPAHOM>2.0.CO;2
Tectonic Elements of the Central Part of the Gulf of California
GSA Bulletin December 01, 1974, Vol.85, 1893-1904. doi:https://doi.org/10.1130/0016-7606(1974)85<1893:TEOTCP>2.0.CO;2
Stratigraphic Value of Silicoflagellates in Nontropical Regions
GSA Bulletin December 01, 1974, Vol.85, 1905-1906. doi:https://doi.org/10.1130/0016-7606(1974)85<1905:SVOSIN>2.0.CO;2
Magnetic Studies on Lake Tahoe, California-Nevada
GSA Bulletin December 01, 1974, Vol.85, 1907-1912. doi:https://doi.org/10.1130/0016-7606(1974)85<1907:MSOLTC>2.0.CO;2
Paleozoic and Lower Mesozoic Volcanism and Continental Growth in the Western United States
JOHN J. W. ROGERS; B. C. BURCHFIEL; E. W. ABBOTT; J. K. ANEPOHL; A. H. EWING; P. J. KOEHNKEN; J. M. NOVITSKY-EVANS; S. C. TALUKDAR
GSA Bulletin December 01, 1974, Vol.85, 1913-1924. doi:https://doi.org/10.1130/0016-7606(1974)85<1913:PALMVA>2.0.CO;2
Composition and Time Relations of Plutonic and Associated Volcanic Rocks, Boulder Batholith Region, Montana
GSA Bulletin December 01, 1974, Vol.85, 1925-1930. doi:https://doi.org/10.1130/0016-7606(1974)85<1925:CATROP>2.0.CO;2
Model for the Late Cenozoic Tectonic History of the Mojave Desert, California, and for Its Relation to Adjacent Regions
GSA Bulletin December 01, 1974, Vol.85, 1931-1944. doi:https://doi.org/10.1130/0016-7606(1974)85<1931:MFTLCT>2.0.CO;2
Middle Cretaceous Nappe Structures in Puerto Rican Ophiolites and Their Relation to the Tectonic History of the Greater Antilles: Discussion
GSA Bulletin December 01, 1974, Vol.85, 1945-1948. doi:https://doi.org/10.1130/0016-7606(1974)85<1945:MCNSIP>2.0.CO;2
Evaporite-Carbonate Rocks of the Jurassic Lovelock Formation, West Humboldt Range, Nevada: Discussion
GSA Bulletin December 01, 1974, Vol.85, 1952. doi:https://doi.org/10.1130/0016-7606(1974)85<1952:EROTJL>2.0.CO;2
Nature of the Boulder Batholith of Montana: Discussion
GSA Bulletin December 01, 1974, Vol.85, 1953-1958. doi:https://doi.org/10.1130/0016-7606(1974)85<1953:NOTBBO>2.0.CO;2
Circum-Caribbean Tectonic and Igneous Activity and the Evolution of the Caribbean Plate: Discussion
GSA Bulletin December 01, 1974, Vol.85, 1961-1962. doi:https://doi.org/10.1130/0016-7606(1974)85<1961:CTAIAA>2.0.CO;2
Use of Chi-Square for the Identification of Peaks in Orientation Data: Comment
GSA Bulletin December 01, 1974, Vol.85, 1963-1966. doi:https://doi.org/10.1130/0016-7606(1974)85<1963:UOCFTI>2.0.CO;2
DISCUSSION AND REPLY
Reply
GSA Bulletin December 01, 1974, Vol.85, 1948-1951. doi:https://doi.org/10.1130/0016-7606(1974)85<1948:R>2.0.CO;2
Reply
GSA Bulletin December 01, 1974, Vol.85, 1958-1960. doi:https://doi.org/10.1130/0016-7606(1974)85<1958:R>2.0.CO;2
ERRATUM
Corrections and Emendations: Volume 85
GSA Bulletin December 01, 1974, Vol.85, 1984-1985. doi:https://doi.org/10.1130/0016-7606(1974)85<1984:CAE>2.0.CO;2