| Abstract: | Pleistocene carbonates of south Florida and islands of the Florida Keys are currently divided into five marine sequences designated, from oldest to youngest, the Q1–Q5 units. The units include a mosaic of freshwater and shallow marine deposits that accumulated on the Florida platform during high sea-level stands. The units are separated by regional-scale subaerial-exposure surfaces that formed during glacioeustatic lowstands. Analyses of cores recovered at Grossman Ridge Rock Reef and Joe Ree Rock Reef in the Florida Everglades reveal additional subaerial-exposure surfaces that are used to delineate subdivisions within units Q1 (Q1a–Q1b), Q2 (Q2a–Q2d), and Q4 (Q4a–Q4b). Units Q1–Q5 preserve evidence of at least 10 separate sea-level highstands, rather than 5 as indicated by previous studies. Compilation of available uranium-series dates on corals recovered from the Florida Keys indicates that the Q4 unit accreted during sea-level maxima associated with marine oxygen-isotope Stage 9 (Q4a) and isotope Stage 7 (Q4b). The Q5 unit formed during isotope Stage 5. No reliable dates are available for units Q1–Q3. We infer that unit Q3 was formed during the extended sea-level highstand of isotope Stage 11 and that units Q2 and Q1 predate isotope Stage 11. |
| Genre: | Article |
| ProdID: | 70003632 |
| Citation Author: | Hickey, Todd D.; Hine, Albert C.; Shinn, Eugene A.; Kruse, Sarah E.; Poore, Richard Z. |
| Citation Contributing Office: | St. Petersburg Coastal and Marine Science Center |
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| Citation End Page: | 614 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Coastal Research |
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| Citation Phsyical Description: | 10 p. |
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| Citation Publisher: | Coastal Education & Research Foundation |
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| Citation Search Results Text: | Pleistocene carbonate stratigraphy of South Florida: Evidence for high-frequency sea-level cyclicity; 2010; Article; Journal; Journal of Coastal Research; Hickey, Todd D.; Hine, Albert C.; Shinn, Eugene A.; Kruse, Sarah E.; Poore, Richard Z. |
| Citation Start Page: | 605 |
| Citation Volume: | 26 |
| Citation Year: | 2010 |
| Type: | citation/reference |
| Text: | Pleistocene carbonate stratigraphy of South Florida: Evidence for high-frequency sea-level cyclicity; 2010; Article; Journal; Journal of Coastal Research; Hickey, Todd D.; Hine, Albert C.; Shinn, Eugene A.; Kruse, Sarah E.; Poore, Richard Z. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (INDEX PAGE): | http://www.bioone.org/doi/abs/10.2112/JCOASTRES-D-09-00052.1 |
| Date Other: | Wed, 5 Oct 2011 00:00 -0500 |
| Publisher: | Coastal Education & Research Foundation |
