Alan S. Kornacki

Reservoir Labs (United States)

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

John A. Wood

University of Alberta

Bruce Fegley

Planetary Science Institute

G. Crozaz

Planetary Science Institute

Albert J. Fahey

Corning (United States)

J. L. Berry

Shell (United States)

E. Zinner

A. A. Ulyanov

Lomonosov Moscow State University

E. Zinner

Washington University in St. Louis

Frank D. Mango

Shell (Netherlands)

John W. Kendrick

Mayo Clinic in Florida

Cooperative Institutions

Shell (United States)

Washington University in St. Louis

University of Washington

Reservoir Labs (United States)

Weatherford (Switzerland)

Planetary Science Institute

United States Naval Research Laboratory

National Institute of Standards and Technology

Massachusetts Institute of Technology

Harvard University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Mineral Chemistry and Origin of Refractory Nodules in Olivine-Rich Allende Inclusions

Meteoritics and Planetary Science (1983)

Alan S. Kornacki

Allende meteorite

Refractory (planetary science)

Melt inclusions

Source

Cite

Citations (3)

Petrography and classification of Ca, Al‐rich and olivine‐rich inclusions in the Allende CV3 chondrite

Journal of Geophysical Research Atmospheres (1984)

Alan S. Kornacki John A. Wood

A detailed, systematic petrographic survey of all (189) Ca, Al‐rich and olivine‐rich inclusions larger than ∼0.2 mm in diameter in 17 thin sections of Allende was performed by optical and scanning electron microscopy. Most of these inclusions are aggregates containing varying proportions of three distinct constituents, termed concentric objects, chaotic material, and inclusion matrix. A new classification system for Allende inclusions is proposed. Olivine‐rich inclusions occur in two textural varieties: unrimmed olivine aggregates (Type 1A inclusions) and rimmed olivine aggregates (Type 1B inclusions). We classify Ca, Al‐rich inclusions (CAI's) on the basis of the size and abundance of their constituent concentric objects (rather than their grain size) into unrimmed complex CAI's (Type 2 inclusions), rimmed complex CAI's (Type 3 inclusions), and simple CAI's (Type 4 inclusions). Several of the inclusion classes grade into each other. Some fundamental relationships among various types of Allende inclusions are discussed. We suggest that the term ‘coarse‐grained,’ even if used only in a relative sense, is too restrictive for some members of one class of inclusion (simple CAI's) and is inappropriate for most members of another class (melilite‐rich complex CAI's).

Allende meteorite

Melilite

Melt inclusions

10.1029/jb089is02p0b573

Cite

Citations (61)

Provenance of Oil in Southern Cuyama Basin, California: ABSTRACT

AAPG Bulletin (1988)

Alan S. Kornacki

10.1306/703c8740-1707-11d7-8645000102c1865d

Cite

Citations (1)

Wet bacterial gas in the northern Gulf of Mexico Basin

AAPG Bulletin (1996)

Alan S. Kornacki Adrienne D. Allie William E. Holman

The northern margin of the offshore Gulf of Mexico Basin is a mixed gas-oil province. Natural gas pools are commonly found that consist largely of bacterial methane enriched in isotopically-light carbon ({delta}{sup 13}C < -55 per mil). But some bacterial gas accumulations, which are much wetter than might be expected, produce commercial amounts of condensate. The wet fraction of these gas pools typically consists of crude oil that has dissolved into dry bacterial methane. We illustrate these concepts using field data collected at two wet bacterial gas fields in the northern Gulf of Mexico. The Popeye Field is located along the Louisiana continental slope 25 miles east of Bullwinkle. This field consists of two commercial gas pools (EUR = 320 Bcf + 3 MMB condensate) in Pleistocene turbidites (G pay sands) separated by a saddle. A few thin sub-commercial oil zones (H sand series) also occur. Conventional cores obtained in the southern gas pool generally do not fluoresce, but a thin fluorescent zone immediately above the seat seal contains remnant oil. The natural gas at Popeye consists largely of bacterial methane; the geochemistry of Popeye condensate indicates it represents dissolved sour oil (similar to Bullwinkle crude). The Peccary Field (EURmore » = 105 Bcf) is located on the Louisiana Shelf 25 miles northeast of Popeye. Peccary pay sands also contain wet bacterial gas. During re-development of the field, one well unexpectedly produced waxy black oil when it was recompleted in an intermediate objective (C{sub 6} sand). Indirect evidence suggests that a wet gas accumulation in the shallower C{sub 5} sand that yielded colorless condensate was underlain by an oil rim. Just before a well in the C{sub 5} sand watered out, it produced a waxy, amber-colored liquid (apparently a mixture of gas condensate and waxy crude oil).« less

Natural gas field

Source

Cite

Citations (1)

Impact of oil and gas vents and slicks on petroleum exploration in the deepwater Gulf of Mexico

Geo-Marine Letters (1994)

Alan S. Kornacki John W. Kendrick J. L. Berry

Petroleum exploration

Racing slick

10.1007/bf01203727

Cite

Citations (23)

The abundance and relative volatility of refractory trace elements in Allende Ca,Al-rich inclusions: implications for chemical and physical processes in the solar nebula

Earth and Planetary Science Letters (1986)

Alan S. Kornacki Bruce Fegley

Allende meteorite

Melilite

Refractory (planetary science)

10.1016/0012-821x(86)90180-9

Cite

Citations (86)

Petroleum Source Potential of Miocene and Eocene Shales from the Continental Slope of the Northwestern Gulf of Mexico

AAPG Bulletin (1993)

Alan S. Kornacki

10.1306/bdff7c1e-1718-11d7-8645000102c1865d

Cite

Citations (0)

The Mineralogy of Spinel-Rich Allende Inclusions: Indicator of the Oxidation State of the Solar Nebula

LPI (1984)

Alan S. Kornacki

Allende meteorite

Source

Cite

Citations (0)

Geochemical, Mineralogical, and Textural Relationships among Allende Refractory Inclusions and Olivine Chondrules

Lunar and Planetary Science Conference (1983)

Alan S. Kornacki

Allende meteorite

Chondrule

Refractory (planetary science)

Source

Cite

Citations (2)

Geological and Geochemical Evaluation of Origin of Heavy Oil in Salinas Basin, California: ABSTRACT

AAPG Bulletin (1989)

Alan S. Kornacki

Seven oil fields have been discovered along the east flank of the Salinas basin on or near the Gabilan shelf. Approximately 400 million bbl of heavy oil (/approximately/ 10-14/degrees/API) have been produced from shallow upper Miocene sandstones in the San Ardo field. Heavy oil (< 15/degrees/API) also is produced from shallow middle and upper Miocene sandstones in three much smaller fields near San Ardo. Slightly higher gravity oil (/approximately/ 16-19/degrees/API) occurs in deeper Miocene sandstones in three small fields in the King City area. The Miocene Monterey Formation is the only good oil-prone source rock in the Salinas basin. The siliceous Hames upper member of the Monterey is a richer source rock than the clay-rich Sandholdt lower member of that formation. Corrected bottom-hole temperature data indicate that the present geothermal gradient in the Salinas basin is nearly 1.8-2.0/degrees/F/100 ft. Source rock maturity modeling, which was calibrated using the maturity measured in five key wells, indicates that most of the oil in the Salinas basin was generated by the Sandholdt shale member of the Monterey. Geochemical evidence supports these conclusions and additionally demonstrates that the heavy oils in the Salinas basin are biodegraded. For example, San Ardo oils typically do notmore » contain normal alkanes or isoprenoid isoalkanes, and these heavy oils generally contain only about 1-2 wt. % sulfur. Heavy, nonbiodegraded Monterey oils from the Santa Maria basin, in contrast, have a full complement of normal alkanes and isoprenoid isoalkanes, and they typically contain about 3-8 wt. % sulfur. Bitumen in the clay-rich Sandholdt Shale contains much less organic sulfur than does bitumen in the siliceous Hames shale.« less

10.1306/703c9fd7-1707-11d7-8645000102c1865d

Cite

Citations (0)