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Journal Article
Published: 01 January 1977
Canadian Journal of Earth Sciences (1977) 14 (1): 25–31.
... of this survey, the two alternative hypotheses to explain the seismic data must be reconsidered. These are (1) the existence of a crustal low velocity zone, and (2) a major deformation of the basement and overlying rocks due to the trench being an ancient zone of weakness, which coincides with the western limit...
Journal Article
Journal: Geology
Published: 01 January 1977
Geology (1977) 5 (1): 16–20.
...J. R. Allan; R. K. Matthews Abstract Carbon isotopic values reported in the literature for low-magnesium calcite Pleistocene limestones are generally more negative than −4‰ PDB, while values reported for most ancient limestones are more positive than −2‰ PDB. This relationship has recently led...
Journal Article
Journal: Geology
Published: 01 January 1977
Geology (1977) 5 (1): 4–10.
... in the accretion of the flanks of carbonate platforms. Micritic carbonate build-ups similar to lithoherms have been recognized in the geologic record. The mounds of the Waulsortian bank margin offer one possible ancient analog. Geological Society of America 1977 ...
Journal Article
Journal: Geology
Published: 01 December 1976
Geology (1976) 4 (12): 713–717.
Journal Article
Journal: Geology
Published: 01 December 1976
Geology (1976) 4 (12): 723–727.
...Frederic L. Schwab Abstract The rate at which sedimentary fill accumulates in both modern and ancient depositional basins is related to plate tectonic setting, among other factors. The tectonic setting of any basin can be specified in terms of type of substratum (oceanic, continental...
Journal Article
Journal: Geology
Published: 01 December 1976
Geology (1976) 4 (12): 728–732.
... maintained for one billion years or more. This ancient age implies that the source region is divorced from the source regions for ocean-floor basalts. Geological Society of America 1976 *Present address: U.S. Geological Survey, Menlo Park, California 94025 ...
Journal Article
Journal: GSA Bulletin
Published: 01 February 1976
GSA Bulletin (1976) 87 (2): 169–181.
...MAGNUS S. GARSON; MIROSLAV KRS Abstract Wilson's concept that transform faults were initiated along ancient fractures is supported by evidence from southeastern Egypt. Geophysical and geological investigations have outlined blocks bounded by transverse fractures oriented perpendicular to the Red...
Journal Article
Journal: GSA Bulletin
Published: 01 January 1976
GSA Bulletin (1976) 87 (1): 117–129.
... of naturally silicified algae, demonstrate that certain morphologies are artifacts of the silicification process, and suggest possible explanations of observed organic chemical trends in recent and ancient sediments. Geological Society of America 1976 Precambrian paleontology experimental...
Journal Article
Journal: AAPG Bulletin
Published: 01 September 1975
AAPG Bulletin (1975) 59 (9): 1602–1625.
... American Association of Petroleum Geologists The “ruling hypotheses of the day” concerning dolomitization, i.e., reflux ( Deffeyes et al, 1965 ), capillary pumping ( Shinn et al, 1965 ), and solution-cannibalization ( Goodell and Garman, 1969 ) are all inadequate to account for most ancient...
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Journal Article
Journal: AAPG Bulletin
Published: 01 September 1975
AAPG Bulletin (1975) 59 (9): 1690–1691.
... probably higher than 40. Our model of lacustrine carbonate formation and transformation offers an explanation for the genesis of Ilich’s Braneshci dolomite deposit. It represents an ancient B-1 stage (type Neusiedler See) with high-magnesian calcite as a primary carbonate mineral deposited at a Mg/Ca...
FIGURES
Journal Article
Journal: Geology
Published: 01 September 1975
Geology (1975) 3 (9): 487–490.
...Frederic L. Schwab Abstract Compositional data for modern deep-sea sand and ancient graywacke were used by Crook to postulate that Atlantic, Andean, and western Pacific continental margin types could be distinguished on the basis of unique composition—a progressive decrease in framework quartz...
Journal Article
Journal: Geophysics
Published: 01 August 1975
Geophysics (1975) 40 (4): 684–685.
Journal Article
Journal: GSA Bulletin
Published: 01 July 1975
GSA Bulletin (1975) 86 (7): 975–978.
Journal Article
Journal: AAPG Bulletin
Published: 01 October 1974
AAPG Bulletin (1974) 58 (10): 2211.
Journal Article
Journal: AAPG Bulletin
Published: 01 October 1974
AAPG Bulletin (1974) 58 (10): 2209–2210.
...M. J. Kocurko Abstract San Andres is a small coralline island 136 km east of the Caribbean coast of Nicaragua. Surface mapping and paleontologic data indicate reefs have been growing actively in the area at least since early Miocene time. Because of the offlap relations of the ancient reef...
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1974
AAPG Bulletin (1974) 58 (5): 787–799.
... the reefs. Although the effects of these influences usually can be documented in studies of recent reefs, their determination in fossil settings is commonly obscure. This may preclude the use of recent reefs as explicit analogues of ancient ones. The applicability and limitations of such comparisons...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 1974
AAPG Bulletin (1974) 58 (5): 825–855.
..., in 1963 Purdy speculated that the submerged karst surface of the Great Bahama Bank created local current conditions that influenced the distribution of Holocene carbonate facies. In 1967 Ball concluded that inherited tectonic bottom topography controlled the limits of many modern and ancient shallow-water...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 1973
GSA Bulletin (1973) 84 (5): 1839–1840.
Journal Article
Journal: GSA Bulletin
Published: 01 May 1973
GSA Bulletin (1973) 84 (5): 1841–1844.
Journal Article
Journal: GSA Bulletin
Published: 01 September 1971
GSA Bulletin (1971) 82 (9): 2515–2540.