Late Miocene to early Pliocene marine diatom and silicoflagellate floras from the Oregon coast and continental shelf
A diatomite outcrop at Bandon Beach, Oregon and some diatom-rich mudstone outcrops from the Oregon continental shelf were examined for diatom and silicoflagellate remains. Samples from these sites are compared, the floras are documented, and the outcrops are related to a modern diatom stratigraphy....
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Veröffentlicht in: | Micropaleontology 1985-01, Vol.31 (3), p.249-270 |
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description | A diatomite outcrop at Bandon Beach, Oregon and some diatom-rich mudstone outcrops from the Oregon continental shelf were examined for diatom and silicoflagellate remains. Samples from these sites are compared, the floras are documented, and the outcrops are related to a modern diatom stratigraphy. Seven silicoflagellate and 91 diatom taxa are recorded from these assemblages, of which two diatom taxa are described as new (Rhizosolenia twistata and Thalassiosira multipora). The abundance of planktonic marine microfossils indicates that these diatomites and mudstones were deposited in a highly productive deep-water marine environment. Sample ages are Early Pliocene for Bandon Beach and Cape Arago, and Late Miocene for Heceta Bank samples, indicating a possible progression from west to east with oldest material seaward (Heceta Bank) and youngest material landward (Bandon Beach and Cape Arago). |
doi_str_mv | 10.2307/1485544 |
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Samples from these sites are compared, the floras are documented, and the outcrops are related to a modern diatom stratigraphy. Seven silicoflagellate and 91 diatom taxa are recorded from these assemblages, of which two diatom taxa are described as new (Rhizosolenia twistata and Thalassiosira multipora). The abundance of planktonic marine microfossils indicates that these diatomites and mudstones were deposited in a highly productive deep-water marine environment. Sample ages are Early Pliocene for Bandon Beach and Cape Arago, and Late Miocene for Heceta Bank samples, indicating a possible progression from west to east with oldest material seaward (Heceta Bank) and youngest material landward (Bandon Beach and Cape Arago).</description><identifier>ISSN: 0026-2803</identifier><identifier>EISSN: 1937-2795</identifier><identifier>DOI: 10.2307/1485544</identifier><language>eng</language><publisher>American Museum of Natural History</publisher><subject>algae ; assemblages ; Bandon Beach ; Cape Arago ; Cell walls ; Cenozoic ; clastic rocks ; continental shelf ; deep-sea environment ; Diatoms ; Drilling ; Flora ; Heceta Bank ; Invertebrata ; lower Pliocene ; Marine ; marine environment ; microfossils ; Miocene ; mudstone ; Neogene ; new taxa ; oceanography ; Oregon ; Outcrops ; planktonic taxa ; Plantae ; Pliocene ; Protista ; Rhizosolenia twistata ; Seas ; sedimentary rocks ; Silicoflagellata ; Spores ; Stratigraphy ; Surgical instruments ; Taxa ; taxonomy ; Tertiary ; Thalassiosira multipora ; United States ; upper Miocene</subject><ispartof>Micropaleontology, 1985-01, Vol.31 (3), p.249-270</ispartof><rights>GeoRef, Copyright 2020, American Geosciences Institute.</rights><rights>Copyright 1985 Micropaleontology Press</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a408t-1af360e38e42c8d6d05ccd9f5bfa1a865c9a669376f01160f75bd09c662638773</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/1485544$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/1485544$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27924,27925,58017,58250</link.rule.ids></links><search><creatorcontrib>Whiting, Mark C</creatorcontrib><creatorcontrib>Schrader, Hans</creatorcontrib><title>Late Miocene to early Pliocene marine diatom and silicoflagellate floras from the Oregon coast and continental shelf</title><title>Micropaleontology</title><description>A diatomite outcrop at Bandon Beach, Oregon and some diatom-rich mudstone outcrops from the Oregon continental shelf were examined for diatom and silicoflagellate remains. Samples from these sites are compared, the floras are documented, and the outcrops are related to a modern diatom stratigraphy. Seven silicoflagellate and 91 diatom taxa are recorded from these assemblages, of which two diatom taxa are described as new (Rhizosolenia twistata and Thalassiosira multipora). The abundance of planktonic marine microfossils indicates that these diatomites and mudstones were deposited in a highly productive deep-water marine environment. Sample ages are Early Pliocene for Bandon Beach and Cape Arago, and Late Miocene for Heceta Bank samples, indicating a possible progression from west to east with oldest material seaward (Heceta Bank) and youngest material landward (Bandon Beach and Cape Arago).</description><subject>algae</subject><subject>assemblages</subject><subject>Bandon Beach</subject><subject>Cape Arago</subject><subject>Cell walls</subject><subject>Cenozoic</subject><subject>clastic rocks</subject><subject>continental shelf</subject><subject>deep-sea environment</subject><subject>Diatoms</subject><subject>Drilling</subject><subject>Flora</subject><subject>Heceta Bank</subject><subject>Invertebrata</subject><subject>lower Pliocene</subject><subject>Marine</subject><subject>marine environment</subject><subject>microfossils</subject><subject>Miocene</subject><subject>mudstone</subject><subject>Neogene</subject><subject>new taxa</subject><subject>oceanography</subject><subject>Oregon</subject><subject>Outcrops</subject><subject>planktonic taxa</subject><subject>Plantae</subject><subject>Pliocene</subject><subject>Protista</subject><subject>Rhizosolenia twistata</subject><subject>Seas</subject><subject>sedimentary rocks</subject><subject>Silicoflagellata</subject><subject>Spores</subject><subject>Stratigraphy</subject><subject>Surgical instruments</subject><subject>Taxa</subject><subject>taxonomy</subject><subject>Tertiary</subject><subject>Thalassiosira multipora</subject><subject>United States</subject><subject>upper Miocene</subject><issn>0026-2803</issn><issn>1937-2795</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1985</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLAzEUhYMoWB_4F7IQXchoMjN5zFKKL6jUha5DmrlpU9JJTVKk_97Udu3qwOU7h3sOQleU3NcNEQ-0lYy17REa0a4RVS06doxGhNS8qiVpTtFZSktCiOSCjVCe6Az43QUDA-AcMOjot_jDHy4rHV2R3ukcVlgPPU7OOxOs13Pwfme2PkSdsI0FyAvA0wjzMGATdMp_DhOGXEKGrD1OC_D2Ap1Y7RNcHvQcfT0_fY5fq8n05W38OKl0S2SuqLYNJ9BIaGsje94TZkzfWTazmmrJmek056Ukt4RSTqxgs550hvOaN1KI5hzd7HPXMXxvIGW1csns3h4gbJIqHiqLv4C3e9DEkFIEq9bRlepbRYnaraoOqxbyek8uUw7xH-xuj80hJONgMPATou_VMmziUDor2kmhCGOsps0voi-Eag</recordid><startdate>19850101</startdate><enddate>19850101</enddate><creator>Whiting, Mark C</creator><creator>Schrader, Hans</creator><general>American Museum of Natural History</general><general>Micropaleontology Press, American Museum of Natural History</general><scope>AAYXX</scope><scope>CITATION</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>19850101</creationdate><title>Late Miocene to early Pliocene marine diatom and silicoflagellate floras from the Oregon coast and continental shelf</title><author>Whiting, Mark C ; Schrader, Hans</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a408t-1af360e38e42c8d6d05ccd9f5bfa1a865c9a669376f01160f75bd09c662638773</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1985</creationdate><topic>algae</topic><topic>assemblages</topic><topic>Bandon Beach</topic><topic>Cape Arago</topic><topic>Cell walls</topic><topic>Cenozoic</topic><topic>clastic rocks</topic><topic>continental shelf</topic><topic>deep-sea environment</topic><topic>Diatoms</topic><topic>Drilling</topic><topic>Flora</topic><topic>Heceta Bank</topic><topic>Invertebrata</topic><topic>lower Pliocene</topic><topic>Marine</topic><topic>marine environment</topic><topic>microfossils</topic><topic>Miocene</topic><topic>mudstone</topic><topic>Neogene</topic><topic>new taxa</topic><topic>oceanography</topic><topic>Oregon</topic><topic>Outcrops</topic><topic>planktonic taxa</topic><topic>Plantae</topic><topic>Pliocene</topic><topic>Protista</topic><topic>Rhizosolenia twistata</topic><topic>Seas</topic><topic>sedimentary rocks</topic><topic>Silicoflagellata</topic><topic>Spores</topic><topic>Stratigraphy</topic><topic>Surgical instruments</topic><topic>Taxa</topic><topic>taxonomy</topic><topic>Tertiary</topic><topic>Thalassiosira multipora</topic><topic>United States</topic><topic>upper Miocene</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Whiting, Mark C</creatorcontrib><creatorcontrib>Schrader, Hans</creatorcontrib><collection>CrossRef</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Micropaleontology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Whiting, Mark C</au><au>Schrader, Hans</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Late Miocene to early Pliocene marine diatom and silicoflagellate floras from the Oregon coast and continental shelf</atitle><jtitle>Micropaleontology</jtitle><date>1985-01-01</date><risdate>1985</risdate><volume>31</volume><issue>3</issue><spage>249</spage><epage>270</epage><pages>249-270</pages><issn>0026-2803</issn><eissn>1937-2795</eissn><abstract>A diatomite outcrop at Bandon Beach, Oregon and some diatom-rich mudstone outcrops from the Oregon continental shelf were examined for diatom and silicoflagellate remains. Samples from these sites are compared, the floras are documented, and the outcrops are related to a modern diatom stratigraphy. Seven silicoflagellate and 91 diatom taxa are recorded from these assemblages, of which two diatom taxa are described as new (Rhizosolenia twistata and Thalassiosira multipora). The abundance of planktonic marine microfossils indicates that these diatomites and mudstones were deposited in a highly productive deep-water marine environment. Sample ages are Early Pliocene for Bandon Beach and Cape Arago, and Late Miocene for Heceta Bank samples, indicating a possible progression from west to east with oldest material seaward (Heceta Bank) and youngest material landward (Bandon Beach and Cape Arago).</abstract><pub>American Museum of Natural History</pub><doi>10.2307/1485544</doi><tpages>22</tpages></addata></record> |
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ispartof | Micropaleontology, 1985-01, Vol.31 (3), p.249-270 |
issn | 0026-2803 1937-2795 |
language | eng |
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source | JSTOR Archive Collection A-Z Listing |
subjects | algae assemblages Bandon Beach Cape Arago Cell walls Cenozoic clastic rocks continental shelf deep-sea environment Diatoms Drilling Flora Heceta Bank Invertebrata lower Pliocene Marine marine environment microfossils Miocene mudstone Neogene new taxa oceanography Oregon Outcrops planktonic taxa Plantae Pliocene Protista Rhizosolenia twistata Seas sedimentary rocks Silicoflagellata Spores Stratigraphy Surgical instruments Taxa taxonomy Tertiary Thalassiosira multipora United States upper Miocene |
title | Late Miocene to early Pliocene marine diatom and silicoflagellate floras from the Oregon coast and continental shelf |
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