James Aronson - Academia.edu (original) (raw)

Papers by James Aronson

Research paper thumbnail of Chow Bahir rift: A “failed” rift in southern Ethiopia

Geology, 1987

The Chow Bahir rift system is a major graben in a 300-km-broad rift zone recognized in southern E... more The Chow Bahir rift system is a major graben in a 300-km-broad rift zone recognized in southern Ethiopia between the Kenyan and Ethiopian domes where the East African rift is not well defined. An extinct (failed) rift discovered along the Omo Canyon to the north and on strike with the Chow Bahir rift ceased activity about 4 m.y. ago. Chow Bahir is in a younger stage of abandonment as the main Ethiopian rift propagates south into this region.

Research paper thumbnail of K-Ar dating of illite diagenesis in ultrafine fractions of mudrocks from the Reindeer D-27 well, Beaufort-Mackenzie area, Arctic Canada

Routledge eBooks, Jul 9, 2021

Research paper thumbnail of AAPG research conference; Radiogenic isotopes and the evolution of sedimentary basins; New Orleans, Louisiana, March 22-24, 1985

AAPG Bulletin, Apr 1, 1986

Research paper thumbnail of Origin of the Clay Minerals at the Cretaceous/Tertiary (K/T) Boundary in Denmark

Research paper thumbnail of The Geochronology of the Plutonic and Metamorphic Rocks of New Zealand

Research paper thumbnail of Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift

Geological Society of America Bulletin, Apr 1, 1990

Page 1. Downloaded from gsabulletin.gsapubs.org on 17 June 2009 Geological Society of America Bul... more Page 1. Downloaded from gsabulletin.gsapubs.org on 17 June 2009 Geological Society of America Bulletin Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift GIDAY WOLDEGABRIEL ...

Research paper thumbnail of Absolute ages of the plutonic and metamorphic rocks of New Zealand

Tectonophysics, Oct 1, 1967

Research paper thumbnail of K/Ar Dating of Illitic Clays in Jurassic Nugget Sandstone and Timing of Petroleum Migration in Wyoming Overthrust Belt: ABSTRACT

Research paper thumbnail of Regional geochronology of New Zealand

Geochimica et Cosmochimica Acta, Jul 1, 1968

Research paper thumbnail of Ages of Detrital White Mica from Devonian-Pennsylvanian Strata of the North Central Appalachian Basin: Dominance of the Acadian Orogen as Provenance

The Journal of Geology, Nov 1, 1994

... JL ARONSON AND THOMAS L. LEWIS ... Burtner (1964) also noted the high proportion of shaley ro... more ... JL ARONSON AND THOMAS L. LEWIS ... Burtner (1964) also noted the high proportion of shaley rock fragment grains in the lower part of the proximal Catskill sequences in eastern New York and Pennsylvania, but he reported progressively increasing proportions of phyllite and ...

Research paper thumbnail of Probable Precambrian Detrital Zircons in New Caledonia and Southwest Pacific Continental Structure

Geological Society of America Bulletin, 1971

A Cretaceous arkosic sandstone from southwestern New Caledonia contains detrital zircon most of w... more A Cretaceous arkosic sandstone from southwestern New Caledonia contains detrital zircon most of which is clear and euhedral. However, about 1 percent is rounded colored grains. The uranium-lead and thorium-lead data for the bulk zircon concentrate indicate discordant Cretaceous ages. The Pb 207 /Pb 206 age is 670 ± 30 m.y. Reasonable arguments for the use of 65 m.y., the minimum age of sedimentation, for the lower intercept of this data point on a concordia diagram extrapolate to a minimum age of 1,000 m.y. for the oldest zircon component. The likely source of these zircons is the Lord Howe Rise which is proposed to be a submerged continental link between New Zealand and Australia.

Research paper thumbnail of A Late Jurassic Mafic Pluton in Newfoundland

Canadian Journal of Earth Sciences, Sep 1, 1974

Research paper thumbnail of The timing and extent of illite formation in Ordovician K-bentonites at the Cincinnati Arch, the Nashville Dome and north-eastern Illinois basin

Basin Research, Jun 1, 1993

Page 1. Basin Research (1 993) 5, 125-1 35 The timing and extent of illite formation in Ordovicia... more Page 1. Basin Research (1 993) 5, 125-1 35 The timing and extent of illite formation in Ordovician K-bentonites at the Cincinnati Arch, the Nashville Dome and north-eastern Illinois basin W. Crawford Elliott and James L. Aronson ...

Research paper thumbnail of The origin of the clay minerals at the Cretaceous /Tertiary boundary in Denmark

Geological Society of America Bulletin, May 1, 1989

Research paper thumbnail of Age and source of the Sidi Hakoma Tuff, Hadar Formation, Ethiopia

Journal of Human Evolution, Sep 1, 1993

Research paper thumbnail of Reconnaissance rubidium—strontium geochronology of New Zealand plutonic and metamorphic rocks

New Zealand Journal of Geology and Geophysics, Jun 1, 1965

A reconnaissance rubidium-strontium geochronological study of the plutonic and metamorphic rocks ... more A reconnaissance rubidium-strontium geochronological study of the plutonic and metamorphic rocks of the South Island and Stewart Island, New Zealand, shows that many of these deep-seated rocks have mineral ages that fall within the narrow limits of 98-119 million vears. In this grouping are rocks associated with the Separation Point Granite, the Charleston Gneiss, the Fiordland — southern Stewart Island

Research paper thumbnail of Mechanism of burial metamorphism of argillaceous sediment: 2. Radiogenic argon evidence

Geological Society of America Bulletin, 1976

Mechanism of burial metamorphism of argillaceous sediment: 1. Mineralogical and chemical evidence... more Mechanism of burial metamorphism of argillaceous sediment: 1. Mineralogical and chemical evidence JOHN HOWER* Department of Earth Sciences, Case Western Reserve University, Cleveland, Ohio 44106 ERIC V. ESLINGER Department of Geology, West Georgia ...

Research paper thumbnail of K/Ar Systematics of Bentonite and Shale in a Contact Metamorphic Zone, Cerrillos, New Mexico1

Clays and Clay Minerals, 1986

Research paper thumbnail of Iridium content of basaltic tuffs and enclosing black shales of the balder formation, North Sea

Geochimica et Cosmochimica Acta, Jul 1, 1992

Research paper thumbnail of K/Ar Systematics of an Acid-Treated Illite/Smectite: Implications for Evaluating Age and Crystal Structure

Clays and Clay Minerals, 1986

Research paper thumbnail of Chow Bahir rift: A “failed” rift in southern Ethiopia

Geology, 1987

The Chow Bahir rift system is a major graben in a 300-km-broad rift zone recognized in southern E... more The Chow Bahir rift system is a major graben in a 300-km-broad rift zone recognized in southern Ethiopia between the Kenyan and Ethiopian domes where the East African rift is not well defined. An extinct (failed) rift discovered along the Omo Canyon to the north and on strike with the Chow Bahir rift ceased activity about 4 m.y. ago. Chow Bahir is in a younger stage of abandonment as the main Ethiopian rift propagates south into this region.

Research paper thumbnail of K-Ar dating of illite diagenesis in ultrafine fractions of mudrocks from the Reindeer D-27 well, Beaufort-Mackenzie area, Arctic Canada

Routledge eBooks, Jul 9, 2021

Research paper thumbnail of AAPG research conference; Radiogenic isotopes and the evolution of sedimentary basins; New Orleans, Louisiana, March 22-24, 1985

AAPG Bulletin, Apr 1, 1986

Research paper thumbnail of Origin of the Clay Minerals at the Cretaceous/Tertiary (K/T) Boundary in Denmark

Research paper thumbnail of The Geochronology of the Plutonic and Metamorphic Rocks of New Zealand

Research paper thumbnail of Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift

Geological Society of America Bulletin, Apr 1, 1990

Page 1. Downloaded from gsabulletin.gsapubs.org on 17 June 2009 Geological Society of America Bul... more Page 1. Downloaded from gsabulletin.gsapubs.org on 17 June 2009 Geological Society of America Bulletin Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift GIDAY WOLDEGABRIEL ...

Research paper thumbnail of Absolute ages of the plutonic and metamorphic rocks of New Zealand

Tectonophysics, Oct 1, 1967

Research paper thumbnail of K/Ar Dating of Illitic Clays in Jurassic Nugget Sandstone and Timing of Petroleum Migration in Wyoming Overthrust Belt: ABSTRACT

Research paper thumbnail of Regional geochronology of New Zealand

Geochimica et Cosmochimica Acta, Jul 1, 1968

Research paper thumbnail of Ages of Detrital White Mica from Devonian-Pennsylvanian Strata of the North Central Appalachian Basin: Dominance of the Acadian Orogen as Provenance

The Journal of Geology, Nov 1, 1994

... JL ARONSON AND THOMAS L. LEWIS ... Burtner (1964) also noted the high proportion of shaley ro... more ... JL ARONSON AND THOMAS L. LEWIS ... Burtner (1964) also noted the high proportion of shaley rock fragment grains in the lower part of the proximal Catskill sequences in eastern New York and Pennsylvania, but he reported progressively increasing proportions of phyllite and ...

Research paper thumbnail of Probable Precambrian Detrital Zircons in New Caledonia and Southwest Pacific Continental Structure

Geological Society of America Bulletin, 1971

A Cretaceous arkosic sandstone from southwestern New Caledonia contains detrital zircon most of w... more A Cretaceous arkosic sandstone from southwestern New Caledonia contains detrital zircon most of which is clear and euhedral. However, about 1 percent is rounded colored grains. The uranium-lead and thorium-lead data for the bulk zircon concentrate indicate discordant Cretaceous ages. The Pb 207 /Pb 206 age is 670 ± 30 m.y. Reasonable arguments for the use of 65 m.y., the minimum age of sedimentation, for the lower intercept of this data point on a concordia diagram extrapolate to a minimum age of 1,000 m.y. for the oldest zircon component. The likely source of these zircons is the Lord Howe Rise which is proposed to be a submerged continental link between New Zealand and Australia.

Research paper thumbnail of A Late Jurassic Mafic Pluton in Newfoundland

Canadian Journal of Earth Sciences, Sep 1, 1974

Research paper thumbnail of The timing and extent of illite formation in Ordovician K-bentonites at the Cincinnati Arch, the Nashville Dome and north-eastern Illinois basin

Basin Research, Jun 1, 1993

Page 1. Basin Research (1 993) 5, 125-1 35 The timing and extent of illite formation in Ordovicia... more Page 1. Basin Research (1 993) 5, 125-1 35 The timing and extent of illite formation in Ordovician K-bentonites at the Cincinnati Arch, the Nashville Dome and north-eastern Illinois basin W. Crawford Elliott and James L. Aronson ...

Research paper thumbnail of The origin of the clay minerals at the Cretaceous /Tertiary boundary in Denmark

Geological Society of America Bulletin, May 1, 1989

Research paper thumbnail of Age and source of the Sidi Hakoma Tuff, Hadar Formation, Ethiopia

Journal of Human Evolution, Sep 1, 1993

Research paper thumbnail of Reconnaissance rubidium—strontium geochronology of New Zealand plutonic and metamorphic rocks

New Zealand Journal of Geology and Geophysics, Jun 1, 1965

A reconnaissance rubidium-strontium geochronological study of the plutonic and metamorphic rocks ... more A reconnaissance rubidium-strontium geochronological study of the plutonic and metamorphic rocks of the South Island and Stewart Island, New Zealand, shows that many of these deep-seated rocks have mineral ages that fall within the narrow limits of 98-119 million vears. In this grouping are rocks associated with the Separation Point Granite, the Charleston Gneiss, the Fiordland — southern Stewart Island

Research paper thumbnail of Mechanism of burial metamorphism of argillaceous sediment: 2. Radiogenic argon evidence

Geological Society of America Bulletin, 1976

Mechanism of burial metamorphism of argillaceous sediment: 1. Mineralogical and chemical evidence... more Mechanism of burial metamorphism of argillaceous sediment: 1. Mineralogical and chemical evidence JOHN HOWER* Department of Earth Sciences, Case Western Reserve University, Cleveland, Ohio 44106 ERIC V. ESLINGER Department of Geology, West Georgia ...

Research paper thumbnail of K/Ar Systematics of Bentonite and Shale in a Contact Metamorphic Zone, Cerrillos, New Mexico1

Clays and Clay Minerals, 1986

Research paper thumbnail of Iridium content of basaltic tuffs and enclosing black shales of the balder formation, North Sea

Geochimica et Cosmochimica Acta, Jul 1, 1992

Research paper thumbnail of K/Ar Systematics of an Acid-Treated Illite/Smectite: Implications for Evaluating Age and Crystal Structure

Clays and Clay Minerals, 1986