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
GCAGS Transactions
Abstract
Late Neogene Palynomorph Diagrams, Northern Gulf of Mexico
William C. Elsik (1)
ABSTRACT
The cyclic nature of Late Neogene climate is reflected in the relative frequency diagrams of palynomorphs deposited in the northern Gulf of Mexico. A general cooling through the Late Neogene and at least five glacial cycles for the Quarternary are indicated. An additional prominent cold cycle in latest Miocene time is interpreted from the frequency diagram of Picea, spruce. The Pliocene-Pleistocene boundary is marked by an abundance of Ambrosia and Helianthus types of Compositae pollen below and increased frequency of Alnus and Exesisporites above. The fungal spore Exesisporites neogenicus, n. gen., n. sp., occurs abundantly in the lower part of the Pleistocene and again lower in the Neogene.
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 |