Chicxulub Multiring Impact Basin: Size and Other Characteristics Derived from Gravity Analysis
Chicxulub Multiring Impact Basin: Size and Other Characteristics Derived from Gravity Analysis
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DOI：
10.1126/science.261.5128.1564
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发表时间：
1993-09
期刊：
影响因子：
56.9
通讯作者：
V. Sharpton;K. Burke;Antonio Camargo-Zanoguera;S. Hall;D. Lee;Luis E. Mar�n;Gerardo Su�arez-Reynoso;Juan Manuel Quezada-Mu�eton;P. Spudis;J. Urrutia‐Fucugauchi
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文献类型：
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作者：
V. Sharpton;K. Burke;Antonio Camargo-Zanoguera;S. Hall;D. Lee;Luis E. Mar�n;Gerardo Su�arez-Reynoso;Juan Manuel Quezada-Mu�eton;P. Spudis;J. Urrutia‐Fucugauchi
与白垩纪-第三纪边界层有关的墨西哥埋藏的希克苏鲁布撞击结构可能比以前怀疑的要大得多。经过重新处理的尤卡坦半岛北方的重力数据显示出三个主要的环和第四环的一部分，其间隔与在其他行星上的多环撞击盆地中观察到的相似。外环，可能对应于盆地的地形边缘，直径近300公里，表明希克苏鲁布可能是自近40亿年前早期轰击结束以来，太阳系内部产生的最大撞击结构之一。
The buried Chicxulub impact structure in Mexico, which is linked to the Cretaceous- Tertiary (K-T) boundary layer, may be significantly larger than previously suspected. Reprocessed gravity data over Northern Yucatan reveal three major rings and parts of a fourth ring, spaced similarly to those observed at multiring impact basins on other planets. The outer ring, probably corresponding to the basin's topographic rim, is almost 300 kilometers in diameter, indicating that Chicxulub may be one of the largest impact structures produced in the inner solar system since the period of early bombardment ended nearly 4 billion years ago.