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1

Trace element geochemistry of altered volcanic ash layers (tonsteins) in Late Permian coal-bearing formations of eastern Yunnan and western Guizhou Provinces, China

Yiping Zhou, Bruce F. Bohor, Youliang Ren

Journal:

International Journal of Coal Geology

Year:

2000

Language:

english

File:

PDF, 603 KB

english, 2000

2

[Geological Society of America Special Papers] 285 : Tonsteins: Altered Volcanic-Ash Layers in Coal-Bearing Sequences Volume 285 || Tonsteins: Altered Volcanic-Ash Layers in Coal-Bearing Sequences

Bohor, Bruce F.

Year:

1993

Language:

english

File:

PDF, 43.17 MB

english, 1993

3

The first direct evidence of pre-columbian sources of palygorskite for Maya Blue

Dean E. Arnold, Bruce F. Bohor, Hector Neff, Gary M. Feinman, Patrick Ryan Williams, Laure Dussubieux, Ronald Bishop

Journal:

Journal of Archaeological Science

Year:

2012

Language:

english

File:

PDF, 1.17 MB

english, 2012

4

Characteristics of zircons from volcanic ash-derived tonsteins in Late Permian coal fields of eastern Yunnan, China

Yiping Zhou, Youliang Ren, Dazong Tang, Bruce Bohor

Journal:

International Journal of Coal Geology

Year:

1994

Language:

english

File:

PDF, 1.24 MB

english, 1994

5

Distinguishing shocked from tectonically deformed quartz by the use of the SEM and chemical etching

Andrew J. Gratz, Diana K. Fisler, Bruce F. Bohor

Journal:

Earth and Planetary Science Letters

Year:

1996

Language:

english

File:

PDF, 1.31 MB

english, 1996

6

Special Paper 307: The Cretaceous-Tertiary Event and Other Catastrophes in Earth History Volume 307 || A sediment gravity flow hypothesis for siliciclastic units at the K/T boundary, northeastern Mexico

Bohor, Bruce F.

Year:

1996

Language:

english

File:

PDF, 1.40 MB

english, 1996

7

Dinosaurs, spherules, and the “magic” layer: A new K-T boundary clay site in Wyoming

Bohor, Bruce F., Triplehorn, Don M., Nichols, Douglas J., Millard, Hugh T.

Journal:

Year:

1987

Language:

english

File:

PDF, 3.67 MB

english, 1987

8

High-Temperature Phase Development in Illitic Clays

Bohor, Bruce F.

Journal:

Clays and Clay Minerals

Year:

1963

Language:

english

File:

PDF, 1.53 MB

english, 1963

9

Origin and distribution of tonsteins in late permian coal seams of Southwestern China

Yi-Ping Zhou, You-Liang Ren, Bruce F. Bohor

Journal:

International Journal of Coal Geology

Year:

1982

Language:

english

File:

PDF, 2.93 MB

english, 1982

10

Cuban K/T catastrophe

BOHOR, BRUCE F., SEITZ, RUSSELL

Journal:

Year:

1990

File:

PDF, 132 KB

1990

11

Magnesioferrite from the Cretaceous-Tertiary boundary, Caravaca, Spain

Bruce F. Bohor, Eugene E. Foord, Ramachandran Ganapathy

Journal:

Earth and Planetary Science Letters

Year:

1986

Language:

english

File:

PDF, 1.17 MB

english, 1986

12

Carbon isotopic compositions of organic matter across continental Cretaceous–Tertiary (K–T) boundary sections: Implications for paleoenvironment after the K–T impact event

Teruyuki Maruoka, Christian Koeberl, Bruce F. Bohor

Journal:

Earth and Planetary Science Letters

Year:

2007

Language:

english

File:

PDF, 656 KB

english, 2007

13

Nickel-rich magnesiowiistite in Cretaceous/Tertiary boundary spherules crystallized from ultramafic, refractory silicate liquids

Frank T. Kyte, Bruce F. Bohor

Journal:

Geochimica et Cosmochimica Acta

Year:

1995

Language:

english

File:

PDF, 1.18 MB

english, 1995

14

Shock-induced microdeformations in quartz and other mineralogical indications of an impact event at the Cretaceous-Tertiary boundary

Journal:

Year:

1990

Language:

english

File:

PDF, 1.90 MB

english, 1990

15

Catastrophes and Earth History: The New Uniformitarianism

Bohor, Bruce F.

Journal:

Eos Transactions American Geophysical Union

Year:

1985

Language:

english

File:

PDF, 299 KB

english, 1985

16

Diatoms and Tonsteins as Paleoenvironmental and Paleodepositional Indicators in a Miocene Coal Bed, Costa Rica

J. David Sanchez, J. Platt Bradbury, Bruce F. Bohor and Donald A. Coates

Journal:

Year:

1987

Language:

english

File:

PDF, 1.34 MB

english, 1987

17

An Ancient Clay Mine at Yo' K'at, Yucatan

Dean E. Arnold and Bruce F. Bohor

Journal:

American Antiquity

Year:

1977

Language:

english

File:

PDF, 1.63 MB

english, 1977

18

Origin and diagenesis of K/T impact spherules-From Haiti to Wyoming and beyond

Bohor, Bruce F., Glass, Billy P.

Journal:

Year:

1995

Language:

english

File:

PDF, 6.33 MB

english, 1995

19

[Geological Society of America Special Papers] Global Catastrophes in Earth History; An Interdisciplinary Conference on Impacts, Volcanism, and Mass Mortality Volume 247 || Shocked quartz and more; Impact signatures in Cretaceous/Tertiary boundary clays

Bohor, Bruce F.

Year:

1990

Language:

english

File:

PDF, 8.27 MB

english, 1990

20

Cretaceous/Tertiary boundary of DSDP Site 596, South Pacific

Zhou, Lei, Kyte, Frank T., Bohor, Bruce F.

Journal:

Year:

1991

Language:

english

File:

PDF, 1.45 MB

english, 1991

21

CHEMICAL DISAGGREGATION OF KAOLINITIC CLAYSTONES (TONSTEINS AND FLINT CLAYS)

Triplehorn, Don M., Bohor, Bruce F., Betterton, William J.

Journal:

Clays and Clay Minerals

Year:

2002

Language:

english

File:

PDF, 162 KB

english, 2002

22

Comment and Reply on “Spheroids at the Cretaceous-Tertiary boundary are altered impact droplets of basaltic composition”

Journal:

Year:

1984

Language:

english

File:

PDF, 2.37 MB

english, 1984

23

Comment and Reply on “Spheroids at the Cretaceous-Tertiary boundary are altered impact droplets of basaltic composition”

Journal:

Year:

1984

File:

PDF, 2.37 MB

1984

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