Orogenic climax of Earth: The 1.2-1.1 Ga Grenvillian superevent

Martin Van Kranendonk, Christopher L. Kirkland

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The rate of growth of the continental crust is controversial. We present an evaluation of time-constrained analyses of oxygen isotopes in zircon grains and incompatible element (Zr, Th) concentrations in magmatic rocks to test for variations in the degree of crustal recycling through geological time. The data indicate a rise in these geochemical proxies from ca. 3.0 Ga to a statistically significant peak at 1.2-1.1 Ga during the amalgamation of supercontinent Rodinia, and a decrease thereafter. When combined with other geological and geophysical observations, the data are interpreted as a consequence of an unprecedented level of crustal recycling and sediment subduction during Rodinia assembly, arising from a "Goldilocks" (i.e., just right) combination of larger, thicker plates on a warmer Earth with more rapid continental drift relative to modern Earth. The subsequent decrease in 18O, Zr, and Th measurements is interpreted to refl ect decreasing drift rates on a cooling Earth.

Original languageEnglish
Pages (from-to)735-738
Number of pages4
JournalGeology
Volume41
Issue number7
DOIs
Publication statusPublished - Jul 1 2013
Externally publishedYes

Fingerprint

Grenvillian orogeny
climax
crustal recycling
Rodinia
continental drift
geological time
supercontinent
continental crust
oxygen isotope
zircon
subduction
cooling
rock
sediment
rate

ASJC Scopus subject areas

  • Geology

Cite this

Orogenic climax of Earth : The 1.2-1.1 Ga Grenvillian superevent. / Van Kranendonk, Martin; Kirkland, Christopher L.

In: Geology, Vol. 41, No. 7, 01.07.2013, p. 735-738.

Research output: Contribution to journalArticle

Van Kranendonk, Martin ; Kirkland, Christopher L. / Orogenic climax of Earth : The 1.2-1.1 Ga Grenvillian superevent. In: Geology. 2013 ; Vol. 41, No. 7. pp. 735-738.
@article{19a3645a107d4682af00a9539dc0a15b,
title = "Orogenic climax of Earth: The 1.2-1.1 Ga Grenvillian superevent",
abstract = "The rate of growth of the continental crust is controversial. We present an evaluation of time-constrained analyses of oxygen isotopes in zircon grains and incompatible element (Zr, Th) concentrations in magmatic rocks to test for variations in the degree of crustal recycling through geological time. The data indicate a rise in these geochemical proxies from ca. 3.0 Ga to a statistically significant peak at 1.2-1.1 Ga during the amalgamation of supercontinent Rodinia, and a decrease thereafter. When combined with other geological and geophysical observations, the data are interpreted as a consequence of an unprecedented level of crustal recycling and sediment subduction during Rodinia assembly, arising from a {"}Goldilocks{"} (i.e., just right) combination of larger, thicker plates on a warmer Earth with more rapid continental drift relative to modern Earth. The subsequent decrease in 18O, Zr, and Th measurements is interpreted to refl ect decreasing drift rates on a cooling Earth.",
author = "{Van Kranendonk}, Martin and Kirkland, {Christopher L.}",
year = "2013",
month = "7",
day = "1",
doi = "10.1130/G34243.1",
language = "English",
volume = "41",
pages = "735--738",
journal = "Geology",
issn = "0091-7613",
publisher = "Geological Society of America",
number = "7",

}

TY - JOUR

T1 - Orogenic climax of Earth

T2 - The 1.2-1.1 Ga Grenvillian superevent

AU - Van Kranendonk, Martin

AU - Kirkland, Christopher L.

PY - 2013/7/1

Y1 - 2013/7/1

N2 - The rate of growth of the continental crust is controversial. We present an evaluation of time-constrained analyses of oxygen isotopes in zircon grains and incompatible element (Zr, Th) concentrations in magmatic rocks to test for variations in the degree of crustal recycling through geological time. The data indicate a rise in these geochemical proxies from ca. 3.0 Ga to a statistically significant peak at 1.2-1.1 Ga during the amalgamation of supercontinent Rodinia, and a decrease thereafter. When combined with other geological and geophysical observations, the data are interpreted as a consequence of an unprecedented level of crustal recycling and sediment subduction during Rodinia assembly, arising from a "Goldilocks" (i.e., just right) combination of larger, thicker plates on a warmer Earth with more rapid continental drift relative to modern Earth. The subsequent decrease in 18O, Zr, and Th measurements is interpreted to refl ect decreasing drift rates on a cooling Earth.

AB - The rate of growth of the continental crust is controversial. We present an evaluation of time-constrained analyses of oxygen isotopes in zircon grains and incompatible element (Zr, Th) concentrations in magmatic rocks to test for variations in the degree of crustal recycling through geological time. The data indicate a rise in these geochemical proxies from ca. 3.0 Ga to a statistically significant peak at 1.2-1.1 Ga during the amalgamation of supercontinent Rodinia, and a decrease thereafter. When combined with other geological and geophysical observations, the data are interpreted as a consequence of an unprecedented level of crustal recycling and sediment subduction during Rodinia assembly, arising from a "Goldilocks" (i.e., just right) combination of larger, thicker plates on a warmer Earth with more rapid continental drift relative to modern Earth. The subsequent decrease in 18O, Zr, and Th measurements is interpreted to refl ect decreasing drift rates on a cooling Earth.

UR - http://www.scopus.com/inward/record.url?scp=84880276303&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880276303&partnerID=8YFLogxK

U2 - 10.1130/G34243.1

DO - 10.1130/G34243.1

M3 - Article

AN - SCOPUS:84880276303

VL - 41

SP - 735

EP - 738

JO - Geology

JF - Geology

SN - 0091-7613

IS - 7

ER -