Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084025 |
Constraints on Emplacement Rates of Intrusions in the Shallow Crust Based on Paleomagnetic Secular Variation | |
Giorgis, Scott1; Horsman, Eric2; Burmeister, Kurtis C.3; Rost, Rebecca1; Herbert, Lauren A.3; Pivarunas, Anthony1,4; Braunagel, Michael1,5 | |
2019-11-19 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:22页码:12815-12822 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | In small-volume igneous intrusions, the duration of magmatism can be difficult to determine because assembly of an intrusion from component magma pulses may occur within geochronologic uncertainties. We demonstrate that the paleomagnetic record of short-term movement of the geomagnetic pole (secular variation) can place constraints on the duration of intrusion assembly over shorter time periods. An analysis of C-14 data paired with paleomagnetic data from lava flows illustrates this approach. The flows record paleosecular variation that, when combined with the maximum rate of secular variation from the Holocene, returns a minimum time elapsed between any two flows. Data from an Oligocene laccolith indicate that this system records a minimum of 49 degrees of secular variation and therefore took at least 750 years to be emplaced. High-precision radiometric geochronology would be unable to resolve this assembly, suggesting that the paleosecular variation record in shallow igneous rocks contains valuable temporal constraints on upper crustal magmatism. |
英文关键词 | paleosecular variation sill emplacement |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000497054600001 |
WOS关键词 | TRACHYTE MESA INTRUSION ; TORRES-DEL-PAINE ; HENRY MOUNTAINS ; NORTH CASCADES ; UTAH ; CONSTRUCTION ; LACCOLITH ; GROWTH ; DEFORMATION ; EVOLUTION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225044 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.SUNY Coll Geneseo, Dept Geol Sci, Geneseo, NY 14454 USA; 2.East Carolina Univ, Dept Geol Sci, Greenville, NC 27858 USA; 3.Univ Pacific, Dept Geol & Environm Sci, Stockton, CA 95211 USA; 4.Univ Florida, Dept Geol Sci, Gainesville, FL USA; 5.Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA |
推荐引用方式 GB/T 7714 | Giorgis, Scott,Horsman, Eric,Burmeister, Kurtis C.,et al. Constraints on Emplacement Rates of Intrusions in the Shallow Crust Based on Paleomagnetic Secular Variation[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(22):12815-12822. |
APA | Giorgis, Scott.,Horsman, Eric.,Burmeister, Kurtis C..,Rost, Rebecca.,Herbert, Lauren A..,...&Braunagel, Michael.(2019).Constraints on Emplacement Rates of Intrusions in the Shallow Crust Based on Paleomagnetic Secular Variation.GEOPHYSICAL RESEARCH LETTERS,46(22),12815-12822. |
MLA | Giorgis, Scott,et al."Constraints on Emplacement Rates of Intrusions in the Shallow Crust Based on Paleomagnetic Secular Variation".GEOPHYSICAL RESEARCH LETTERS 46.22(2019):12815-12822. |
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