Composition of the ancient north American crust

Kent C. Condie

Composition of the ancient north American crust

Kent C. Condie^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Abstract. Geochemical studies of Wyoming Precambrian graywackes derived from continental crust older than 3.2 × 10⁹ years indicate that their source area was at least as highly differentiated as most younger Precambrian crust. The composition of this early crust (approximately that of calcium-rich granite) is not unlike that of the 2.5 to 3.2 × 10 ⁹ year old North American crust, Limited geochemical data suggest that the composition of North America may not have changed significantly during the last 3.0 to 3.5 × 10⁹ years.

Original language	English
Pages (from-to)	1015-1017
Number of pages	3
Journal	Science
Volume	155
Issue number	3765
Publication status	Published - 1967
Externally published	Yes

Cite this

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title = "Composition of the ancient north American crust",

abstract = "Abstract. Geochemical studies of Wyoming Precambrian graywackes derived from continental crust older than 3.2 × 109 years indicate that their source area was at least as highly differentiated as most younger Precambrian crust. The composition of this early crust (approximately that of calcium-rich granite) is not unlike that of the 2.5 to 3.2 × 10 9 year old North American crust, Limited geochemical data suggest that the composition of North America may not have changed significantly during the last 3.0 to 3.5 × 109 years.",

author = "Condie, {Kent C.}",

year = "1967",

language = "English",

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pages = "1015--1017",

journal = "Science",

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T1 - Composition of the ancient north American crust

AU - Condie, Kent C.

PY - 1967

Y1 - 1967

N2 - Abstract. Geochemical studies of Wyoming Precambrian graywackes derived from continental crust older than 3.2 × 109 years indicate that their source area was at least as highly differentiated as most younger Precambrian crust. The composition of this early crust (approximately that of calcium-rich granite) is not unlike that of the 2.5 to 3.2 × 10 9 year old North American crust, Limited geochemical data suggest that the composition of North America may not have changed significantly during the last 3.0 to 3.5 × 109 years.

AB - Abstract. Geochemical studies of Wyoming Precambrian graywackes derived from continental crust older than 3.2 × 109 years indicate that their source area was at least as highly differentiated as most younger Precambrian crust. The composition of this early crust (approximately that of calcium-rich granite) is not unlike that of the 2.5 to 3.2 × 10 9 year old North American crust, Limited geochemical data suggest that the composition of North America may not have changed significantly during the last 3.0 to 3.5 × 109 years.

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M3 - Article

AN - SCOPUS:37049241197

SN - 0036-8075

VL - 155

SP - 1015

EP - 1017

JO - Science

JF - Science

IS - 3765

ER -

Composition of the ancient north American crust

Abstract

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