Geologic map of the Cook Inlet region, Alaska, including parts of the Talkeetna, Talkeetna Mountains, Tyonek, Anchorage, Lake Clark, Kenai, Seward, Iliamna, Seldovia, Mount Katmai, and Afognak 1:250,000-scale quadrangles

AbstractThe most widespread of all Holocene tephra deposits in the Cook Inlet region of south-central Alaska is a set of deposits from Hayes volcano. Because of their unique phenocryst content—biotite in rare amounts and a high proportion of amphibole to pyroxene—the deposits are readily identifiable at all but the most distant sites where they are very fine grained. Eighteen radiocarbon dates from eight upland sites limit the age of the tephra set to between about 3500 and 3800 yr. The set originated at Hayes volcano in the Tordrillo Mountains 150 km northwest of Anchorage; seven or possibly eight closely succeeding deposits, low-silica dacite in composition, compose two main lobes that extend northeast for 400 km and south for at least 250 km from the vent. We estimate the total tephra volume to be 10 km3; multiple layers imply four to six larger and two or three smaller eruptions. The deposits are a nearly isochronous marker horizon that should be useful in future archeologic, geologic, and palynologic studies in the region.

Download Full-text

Utility of radiocarbon-dated stratigraphy in determining late Holocene earthquake recurrence intervals, upper Cook Inlet region, Alaska

Geological Society of America Bulletin ◽

10.1130/0016-7606(1992)104<0684:uordsi>2.3.co;2 ◽

1992 ◽

Vol 104 (6) ◽

pp. 684-694 ◽

Cited By ~ 12

Author(s):

SUSAN BARTSCH-WINKLER ◽

HENRY R. SCHMOLL

Keyword(s):

Late Holocene ◽

Earthquake Recurrence ◽

Cook Inlet ◽

Inlet Region ◽

Recurrence Intervals

Download Full-text

Calibration of Tides in an Operational Forecast System for the Shelikof Straits—Cook Inlet Region of Alaska

Estuarine and Coastal Modeling ◽

10.1061/9780784412411.00010 ◽

2012 ◽

Cited By ~ 1

Author(s):

Lyon W. J. Lanerolle ◽

Richard C. Patchen

Keyword(s):

Forecast System ◽

Cook Inlet ◽

Operational Forecast ◽

Inlet Region

Download Full-text

CISPRI TECHNICAL MANUAL—A DIFFERENT APPROACH

International Oil Spill Conference Proceedings ◽

10.7901/2169-3358-1995-1-929 ◽

1995 ◽

Vol 1995 (1) ◽

pp. 929-931

Author(s):

Victoria Askin

Keyword(s):

Oil Spill ◽

Oil Industry ◽

Cook Inlet ◽

Technical Manual ◽

Member Company ◽

Inlet Region ◽

Response Information ◽

Contingency Plans ◽

Common Response ◽

Oil Spill Response

ABSTRACT Cook Inlet Spill Prevention & Response, Inc. (CISPRI) is an oil industry sponsored oil spill response cooperative with headquarters in Nikiski, Alaska. CISPRI presently provides a variety of spill response services in support of member company petroleum operations in the Cook Inlet region of Alaska. Currently, each of CISPRI's 12 member companies has one or more contingency plans (one company has seven). By utilizing a single agency-approved CISPRI Technical Manual, each member is allowed to include in their C-Plan, by reference, all common response information that is included in the CISPRI Technical Manual.

Download Full-text