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Geoscientists discover ancestral Puebloans survived on ice melt in New Mexico lava tubes（图）
Geoscientists ancestral Puebloans survived ice melt New Mexico lava tubes
2020/12/11
For more than 10,000 years, the people who lived on the arid landscape of modern-day western New Mexico were renowned for their complex societies, unique architecture and early economic and political ...
Proposed retrofit for sediment settling velocity tubes (SVTs)
sediment settling velocities sediment distribution
2017/4/12
In order to determine the distribution of sediments, bottom-withdrawal settling velocity tubes (SVTs) are used. This
technique is, for example, often applied in estuaries. Yet, these tubes have serio...
The ultrastructure of calcareous cirratulid (Polychaeta,Annelida) tubes
Cirratulidae ultrastructure biomineralization Oligocene Recent
2009/10/21
The entire tube wall of Dodecaceria caulleryi and D. coralii is composed of thin calcareous lamellae with a spherulitic prismatic ultrastructure. In Diplochaetetes mexicanus the tube ultrastructure is...