她和沃德配合阐发了英国哥伦比亚海岸的海底堆积物，测定了差别范例的碳的露量。这些沉积物形成于上述两次大灭绝之间。
She and Ward analyzed seafloor sediments from the coast of British Columbia that accumulated during and between the two extinctions, measuring the ratios of different types of carbon.
钙质沉积物堆积在海底，最后压紧并胶结形成石灰岩。
Calcareous sediments accumulated on a sea floor and eventually were compacted and cemented to form limestone.
钙质沉积物堆积在海底，最后压紧并胶结形成石灰岩。
Calcareous sediments accumulated on a sea floor and eventually were compacted and cemented to form limestone.
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