New evidence for a long Rhaetian from a Panthalassan succession (Wrangell Mountains, Alaska) and regional differences in carbon cycle perturbations at the Triassic-Jurassic transition
New evidence for a long Rhaetian from a Panthalassan succession (Wrangell Mountains, Alaska) and regional differences in carbon cycle perturbations at the Triassic-Jurassic transition
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来自 Panthalassan 序列（阿拉斯加兰格尔山脉）的长雷蒂亚的新证据以及三叠纪-侏罗纪过渡时期碳循环扰动的区域差异
DOI：
10.1016/j.epsl.2021.117262
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发表时间：
2022
影响因子：
5.3
通讯作者：
Caruthers, A.H.
中科院分区：
文献类型：
--
作者：
Caruthers, A.H.
三叠纪末生物大灭绝是中生代地球历史上的五大生物大灭绝事件之一。它与中大西洋岩浆区的侵位以及一系列相互关联的环境和气候反应有关，这些反应造成陆地和海洋生物圈的严重恶化。然而，目前的理解受到以下因素的阻碍：（i）地理上有限的地点和数据集;（ii）晚三叠世和侏罗纪早期欧洲部分相对海平面较低造成的地层记录不完整;（iii）最晚三叠世雷蒂阶估计持续时间的重大差异，限制了当地和全球气候和生物响应的时空评价。在这里，我们研究了热带海洋泛海底沉积的地层保存完好的沉积序列的晚三叠世-早侏罗世时间间隔。我们提出了各种新的数据，从较低的麦卡锡组暴露在格罗托溪（兰格尔山，阿拉斯加南部），包括菊石，双壳类，水螅虫，牙形石生物地层;有机碳同位素（δ 13 C org）地层;和CA-ID TIMS锆石U-Pb年龄。这些数据是一致的Norian-Rhaetian边界（NRB）的209 Ma，提供了新的证据来支持一个长期的Rhaetian。他们还限制三叠纪-侏罗纪边界（TJB）的一个106米的间隔在该部分。我们的TJB δ 13 C org记录来自Grotto Creek，结合以前的数据，展示了一致的特征，不仅在全球范围内表现出相关性，而且与一些特提斯记录相比，还显示出局部的异质性。值得注意的是，在一个大的负碳同位素偏移（NCIE）已知的特提斯地方的小偏移是不存在的泛塔拉萨记录。这一新的同位素比较记录有助于（i）区分全球信号的区域叠加;（ii）对TJB中普遍存在的小规模NCIE提出疑问;以及（iii）突出一些假定的碳循环扰动的基本未解决的区域与全球规模。这些古生物学和地球化学数据建立了格罗托溪剖面作为一个重要的上三叠统下侏罗纪的继承，由于其古地理位置和完整的海洋记录。我们的记录代表了来自Wrangellia的NRB和TJB间隔的最佳文件，可能是整个北美科迪勒拉。
The end-Triassic mass extinction is one of the big five extinction events in Phanerozoic Earth history. It is linked with the emplacement of the Central Atlantic Magmatic Province and a host of interconnected environmental and climatic responses that caused profound deterioration of terrestrial and marine biospheres. Current understanding, however, is hampered by (i) a geographically limited set of localities and data;(ii) incomplete stratigraphic records caused by low relative sea-level in European sections during the Late Triassic and earliest Jurassic; and (iii) major discrepancies in the estimated duration of the latest Triassic Rhaetian that limit spatiotemporal evaluation of climatic and biotic responses locally and globally. Here, we investigate the Late Triassic–Early Jurassic time interval from a stratigraphically well-preserved sedimentary succession deposited in tropical oceanic Panthalassa. We present diverse new data from the lower McCarthy Formation exposed at Grotto Creek (Wrangell Mountains, southern Alaska), including ammonoid, bivalve, hydrozoan, and conodont biostratigraphy; organic carbon isotope (δ 13 C org) stratigraphy; and CA-ID TIMS zircon U–Pb dates. These data are consistent with a Norian-Rhaetian Boundary (NRB) of∼ 209 Ma, providing new evidence to support a long duration of the Rhaetian. They also constrain the Triassic-Jurassic boundary (TJB) to a∼ 6 m interval in the section. Our TJB δ 13 C org record from Grotto Creek, in conjunction with previous data, demonstrates consistent features that not only appear correlative on a global scale but also shows local heterogeneities compared to some Tethyan records. Notably, smaller excursions within a large negative carbon isotope excursion [NCIE] known from Tethyan localities are absent in Panthalassan records. This new comparative isotopic record becomes useful for (i) distinguishing regional overprinting of the global signal;(ii) raising questions about the ubiquity of smaller-scale NCIEs across the TJB; and (iii) highlighting the largely unresolved regional vs. global scale of some presumed carbon cycle perturbations. These paleontological and geochemical data establish the Grotto Creek section as an important Upper Triassic to Lower Jurassic succession due to its paleogeographic position and complete marine record. Our record represents the best documentation of the NRB and TJB intervals from Wrangellia, and likely the entire North American Cordillera.
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影响因子：
12.1
作者：
M. Rigo;T. Onoue;L. Tanner;S. Lucas;L. Godfrey;M. Katz;M. Zaffani;K. Grice;J. Cesar;D. Yam
通讯作者：
M. Rigo;T. Onoue;L. Tanner;S. Lucas;L. Godfrey;M. Katz;M. Zaffani;K. Grice;J. Cesar;D. Yam
加拿大威利斯顿湖最上层三叠纪磷矿：与三叠纪末大规模灭绝之前 Panthalassa 东北部波动的缺氧缺氧条件有关
影响因子：
4.6
作者：
E. Larina;D. Bottjer;F. Corsetti;J. Zonneveld;A. Celestian;J. Bailey
通讯作者：
J. Bailey
不列颠哥伦比亚雷蒂亚地区自形锆石的 U-Pb 同位素年龄：对晚三叠世科迪勒拉构造的影响
影响因子：
2.5
作者：
M. Golding;J. Mortensen;J. Zonneveld;M. Orchard
通讯作者：
M. Orchard
DOI：
10.1002/9781119382508.ch10
发表时间：
2018-11
期刊：
Chemostratigraphy Across Major Chronological Boundaries
影响因子：
--
作者：
C. Korte;M. Ruhl;J. Pálfy;C. Ullmann;S. Hesselbo
通讯作者：
C. Korte;M. Ruhl;J. Pálfy;C. Ullmann;S. Hesselbo
奥地利北钙质阿尔卑斯山 Kuhjoch 三叠纪-侏罗纪 GSSP 及其周围的结构复杂性
影响因子：
2.3
作者：
M. Palotai;J. Pálfy;Ágoston Sasvári
通讯作者：
Ágoston Sasvári