About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
The AAPG/Datapages Combined Publications Database
Journal of Sedimentary Research (SEPM)
Abstract
A Probable Cave Breccia in Middle Cambrian Limestone, Southern Nevada: Petrography and Paleomagnetic Constraints on the Time of Formation
Stephen L. Gillett (2)
ABSTRACT
A spectacular limestone breccia, which occurs at or near the contact between the Carrara Formation (Early-Middle Cambrian) and Bonanza King Formation (Middle Cambrian) in the Desert Range, southern Nevada, probably reflects a cave that has subsequently collapsed and "healed." The breccia blocks are angular; represent a diverse suite of shallow-water limestones that can be recognized laterally in undisputed strata; and exhibit clean truncation of late diagenetic fabrics, such as stylolites and blocky spar cements, at clast edges. In the blocks, the in situ directions of a secondary magnetization have been scattered. The age of this magnetization probably lies in the range Late Cretaceous to mid-Cenozoic, which suggests that the time of brecciation is no older than Late Cretaceous. The reccia must be older than late Tertiary, however, because it is truncated by Basin-and-Range normal faulting.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
Watermarked PDF Document: $14 | |
Open PDF Document: $24 |