The causal link between the Comei-Bunbury large igneous province (CBLIP) and the Kerguelen mantle plume (KMP) remains a topic of debate. Here, a new paleomagnetic study was conducted on the Zhela Formation basalts and sandstones (ca. 147–140 Ma) in the Taga area of the eastern Tethyan Himalaya (TH). The sandstone specimens had erratic demagnetization patterns, and reliable characteristic remanent magnetization (ChRM) directions could not be isolated. Positive fold and reversal tests indicate that the ChRM directions of the Zhela Formation basalts should be the primary magnetization. The tilt-corrected site-mean direction from 18 sites is = 87.8°/70.0° (α = 6.8°), yielded a paleopole of 21.6°N/130.2°E (A = 12.0°) and a paleolatitude of 54.7° ± 12.0°S for the study area (28.4°N, 91.8°E). Comparison with robust latest Jurassic and Early Cretaceous paleomagnetic, geochemical, and geochronological data from the eastern TH, northeastern Indian craton, and southwestern Australia reveal that (1) the eruption periods of the Comei igneous rocks are similar to the Bunbury basalt (and the Naturaliste Plateau volcanic rocks); (2) the original erupted positions of the Comei-Bunbury (CB) igneous rocks were in agreement with the reconstructed KMP; and (3) the CBLIP originated from the KMP.

中文翻译：

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科梅-班伯里大型火成岩省与凯尔盖朗地幔柱之间联系的古地磁约束


科梅-班伯里大型火成岩省 (CBLIP) 与凯尔盖朗地幔柱 (KMP) 之间的因果关系仍然是一个有争议的话题。在这里，对特提斯喜马拉雅山 (TH) 东部塔加地区的哲拉组玄武岩和砂岩（约 147-140 Ma）进行了一项新的古地磁研究。砂岩样本的退磁模式不稳定，无法分离出可靠的特征剩磁 (ChRM) 方向。正褶皱和反转测试表明哲拉组玄武岩的ChRM方向应该是主要磁化方向。 18 个站点的倾斜校正站点平均方向 = 87.8°/70.0° (α = 6.8°)，产生的古极点为 21.6°N/130.2°E (A = 12.0°)，古纬度为 54.7° ± 12.0研究区域的°S（28.4°N，91.8°E）。与来自 TH 东部、印度克拉通东北部和澳大利亚西南部可靠的最新侏罗纪和早白垩世古地磁、地球化学和年代学数据的比较表明：(1) Comei 火成岩的喷发周期与 Bunbury 玄武岩（和 Naturaliste）相似。高原火山岩）； （2）Comei-Bunbury（CB）火成岩原始喷发位置与重建的KMP一致； (3) CBLIP源自KMP。