Arid
DOI10.1016/j.palaeo.2020.110019
Paleotropical climate oscillations from upper Mississippian and Pennsylvanian stratigraphic records of western Laurentia: A convolution of plate migration and Gondwanan ice dynamics
Ahern, Justin P.; Fielding, Christopher R.
通讯作者Ahern, JP (corresponding author), 1201 Lincoln Mall,Apt 308, Lincoln, NE 68508 USA.
来源期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
EISSN1872-616X
出版年2021
卷号561
英文摘要In the Rocky Mountain region of the western United States, upper Mississippian and Pennsylvanian stratigraphy in central Montana and northern Utah preserve a poorly documented, paleotropical stratigraphic record that spans the Carboniferous interval of the Late Paleozoic Ice Age (LPIA). Sedimentologic and stratigraphic investigation of the Otter Formation (Visean) to the Alaska Bench (Bashkirian) in central Montana, and the Humbug Formation (Visean) to the Weber Formation (Gzhelian) in northern Utah, facilitated an appraisal of paleotropical environmental change preserved in these successions. Paleoclimate records of central Montana and northern Utah that were documented during this investigation were compared with previously derived records throughout paleotropical Laurentia to elucidate the mechanisms responsible for preserved paleoclimate trends. From the Serpukhovian through the Pennsylvanian, paleoclimate records from tropical western Laurentia preserve a broad first-order trend of progressive aridification driven by northern plate migration through increasingly arid paleoclimate belts. Current biostratigraphic indicators suggest that discrete excursions in humidity (< 3 Myr in duration) preserved in the stratigraphic record of central Montana broadly coincide with estimates of the main eustatic signal of the LPIA, the C1 glacial interval, and initial onset of the C2 glacial interval, whereas northern Utah was characterized by a relatively consistent humid, to humid, seasonally-dry paleoclimate at that time. Paleotropical climate excursions (< 5 Myr in duration) that likewise broadly coincide with known glacial intervals are similarly recorded in stratigraphic records throughout the Laurentian paleotropics, though paleolatitude exerted an influence over the magnitude and character of these paleoclimate excursions. Late Mississippian and early Pennsylvanian paleoclimate oscillations preserved in central Montana that are superimposed on the first-order, tectonically-driven aridification trend were likely forced by a coupled northward migration and intensification of the ITCZ during glacial episodes. This pattern provides evidence of a teleconnection between paleotropical climate and Gondwanan ice dynamics during the LPIA.
英文关键词Late Paleozoic Ice Age Paleoclimate Carboniferous LPIA Glaciation Paleotropics
类型Review
语种英语
收录类别SCI-E
WOS记录号WOS:000595639600001
WOS关键词BEAR GULCH LIMESTONE ; INTERTROPICAL CONVERGENCE ZONE ; TROPICAL RAIN-FORESTS ; SEA-LEVEL ; CARBONIFEROUS GLACIATION ; GLACIOEUSTATIC SIGNAL ; EASTERN AUSTRALIA ; AGE CONSTRAINTS ; NORTHERN UTAH ; PARANA BASIN
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向Physical Geography ; Geology ; Paleontology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/348086
作者单位[Ahern, Justin P.; Fielding, Christopher R.] Univ Nebraska Lincoln, Dept Earth & Atmospher Sci, 126 Bessey Hall, Lincoln, NE 68588 USA
推荐引用方式
GB/T 7714
Ahern, Justin P.,Fielding, Christopher R.. Paleotropical climate oscillations from upper Mississippian and Pennsylvanian stratigraphic records of western Laurentia: A convolution of plate migration and Gondwanan ice dynamics[J],2021,561.
APA Ahern, Justin P.,&Fielding, Christopher R..(2021).Paleotropical climate oscillations from upper Mississippian and Pennsylvanian stratigraphic records of western Laurentia: A convolution of plate migration and Gondwanan ice dynamics.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,561.
MLA Ahern, Justin P.,et al."Paleotropical climate oscillations from upper Mississippian and Pennsylvanian stratigraphic records of western Laurentia: A convolution of plate migration and Gondwanan ice dynamics".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 561(2021).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Ahern, Justin P.]的文章
[Fielding, Christopher R.]的文章
百度学术
百度学术中相似的文章
[Ahern, Justin P.]的文章
[Fielding, Christopher R.]的文章
必应学术
必应学术中相似的文章
[Ahern, Justin P.]的文章
[Fielding, Christopher R.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。