Science. 1966 Sep 16;153(3742):1373-6. doi: 10.1126/science.153.3742.1373.
A seismic reflection, gravity, and aeromagnetic reconnaissance was made in the Pensacola Mountains, Antarctica, during the 1965-66 austral summer. Prominent ice streams located between the Neptune and Patuxent Ranges and east of the Forrestal Range overlie channels in the rock surface 2000 meters below sea level which are probably of glacial origin. Seismic reflections show that the Filchner Ice Shelf is 1270 meters thick near its southern margin. Along the boundary between West and East Antarctica, Bouguer anomalies decrease from +60 milligals in West Antarctica to -80 milligals in East Antarctica. An abrupt change in crustal structure across this boundary is required to explainl the 2 milligals per kilometer gradient. This may indicate a fault extending through the crust into the mantle. Aeromagnetic profiles delineate anomalies up to 1800 gamma associated with the basic stratiform intrusion which comprises the Dufek and Forrestal ranges. A probable minimum area of 9500 square kilometers is calculated for the intrusive body on the basis of the magnetic anomalies, making it one of the largest bodies of its type. The extension of this magnetic anominaly across a fault forming the north border of the Pensacola Mountains probably precludes transcurrent movement.
在 1965-66 年的南极夏，对南极洲彭萨科拉山脉进行了地震反射、重力和航空磁测勘查。在 Neptune 和 Patuxent 山脉之间以及 Forrestal 山脉以东的显著冰流，覆盖了低于海平面 2000 米处岩石表面的通道，这些通道可能是冰川成因的。地震反射表明，在其南部边缘附近，Filchner 冰架厚达 1270 米。沿着南极洲东西边界，Bouguer 异常从南极洲西部的+60 毫伽下降到南极洲东部的-80 毫伽。需要地壳结构的突然变化来解释每公里 2 毫伽的梯度。这可能表明有一条断层穿过地壳延伸到地幔。航空磁测剖面描绘了与基本层状侵入体相关的高达 1800 伽马的异常，该侵入体构成了 Dufek 和 Forrestal 山脉。根据磁异常，侵入体的可能最小面积为 9500 平方公里，这使其成为同类中最大的侵入体之一。该磁异常在构成彭萨科拉山脉北部边界的断层上的延伸可能排除了横移运动。
