CRUSTAL STRUCTURE FROM A SEISMIC REFRACTION PROFILE ACROSS SOUTHERN BRITISH-COLUMBIA

被引：31

作者：

CUMMING, WB ^{[1
]}

CLOWES, RM ^{[1
]}

ELLIS, RM ^{[1
]}

机构：

[1] UNIV BRITISH COLUMBIA, DEPT GEOPHYS & ASTRON, VANCOUVER V6T 1W5, BC, CANADA

来源：

CANADIAN JOURNAL OF EARTH SCIENCES | 1979年 / 16卷 / 05期

关键词：

D O I：

10.1139/e79-090

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A partially reversed seismic refrction profile utilizing mine blasts as sources was recorded across southern British Columbia from Sparwood to the Highland Valley. The westwardly directed profile consisted of 32 short period seismograms covering 440 km, while the reversed line extended 330 km with 41 seismograms. From a starting model based on first arrival times and previous geological and geophysical data, a seismic structural section is developed using both synthetic seismograms and a program for ray tracing through inhomogeneous media. The seismic structure of the upper crust was found to correlate closely with the regional geology as evidenced by traveltime and amplitude anomalies where the profile crosses the Rocky Mountain Trench and the Interior Plateau-Eastern Metamorphic Belt boundaries.

引用

页码：1024 / 1040

页数：17

共 45 条

[1] GRAVITY MODEL FOR GUICHON CREEK BATHOLITH, SOUTH-CENTRAL BRITISH-COLUMBIA [J].

AGER, CA ;

ULRYCH, TJ ;

MCMILLAN, WJ .

CANADIAN JOURNAL OF EARTH SCIENCES, 1973, 10 (06) :920-935

[2]

Atwater T., 1970, GEOL SOC AM BULL, V81, P3513, DOI DOI 10.1130/0016-7606(1970)81[3513:IOPTFT]2.0.CO

[3]

[4]

Bally A.W., 1966, B CAN PETROL GEOL, V14, P337, DOI DOI 10.35767/GSCPGBULL.14.3.337

[5]

BENNETT GT, 1975, B SEISMOL SOC AM, V65, P37

[6] REVIEW OF GEOPHYSICAL STUDIES IN CANADIAN CORDILLERA [J].

BERRY, MJ ;

JACOBY, WR ;

NIBLETT, ER ;

STACEY, RA .

CANADIAN JOURNAL OF EARTH SCIENCES, 1971, 8 (07) :788-+

[7] STRUCTURE OF CANADIAN CORDILLERA FROM SEISMIC REFRACTION AND OTHER DATA [J].

BERRY, MJ ;

FORSYTH, DA .

CANADIAN JOURNAL OF EARTH SCIENCES, 1975, 12 (02) :182-208

[8] HEAT-FLOW DETERMINATIONS IN NORTHWESTERN UNITED STATES [J].

BLACKWELL, DD .

JOURNAL OF GEOPHYSICAL RESEARCH, 1969, 74 (04) :992-+

[9] CRUSTAL STRUCTURE ACROSS WASATCH FRONT FROM DETAILED SEISMIC REFRACTION STUDIES [J].

BRAILE, LW ;

SMITH, RB ;

KELLER, GR ;

WELCH, RM ;

MEYER, RP .

JOURNAL OF GEOPHYSICAL RESEARCH, 1974, 79 (17) :2669-2677

[10]

Bullen K.E., 1963, INTRO THEORY SEISMOL

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