The Tunica Hills, Louisiana-Mississippi
Late Glacial Locality for Spruce and Deciduous Forest Species
Bibliographic Data
| ID | 24088635 |
|---|---|
| Authors | Paul A Delcourt (Louisiana State University), Hazel R Delcourt (Louisiana State University) |
| Year | 1977 |
| Volume | 7 |
| Issue | 2 |
| Pages | 218-237 |
| Publication date | 1977-03-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Quaternary Research (JOURNAL) |
| Journal identifiers | ISSN: 0033-5894 • E-ISSN: 1096-0287 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1016/0033-5894(77)90038-2 |
| OpenAlex | W1967925059 |
| Language | EN |
| Citations received | 18 |
| References cited | 21 |
Reinvestigation of Quaternary sediments in West Feliciana Parish, southeastern Louisiana, and adjacent Wilkinson County, southwestern Mississippi, has resulted in revision of previous terrace stratigraphy of this portion of the Gulf Coastal Plain. Plant-macrofossil and pollen assemblages incorporated in fluviatile terrace deposits in the study area are reexamined in light of the current stratigraphic understanding. Macrofossils identified as white spruce ( Picea glauca ), tamarack ( Larix laricina ), and northern white cedar ( Thuja occidentalis ), recovered from these terrace deposits along with fossil remains of distinctly southern plant species, were initially interpreted as the result of dynamic intermixing of aggressive boreal species within a southern forest during the early Wisconsin (Brown, 1938). Failure to distinguish chronologically separate fossiliferous deposits resulted in the conceptual “mixing” of northern and southern plant species which came from two distinct fluviatile terrace sequences. Terrace 2 is now believed to be a fluviatile and coastwise depositional terrace of Sangamon Interglacial age; deposits of terrace 2 contain a distinctly warm-temperate plant assemblage. Fluviatile terrace 1 dates from 12,740 ± 300 to 3457 ± 366 BP and is now considered to be related to late glacial and Holocene aggradation and lateral migration of the Mississippi River (the local base level for streams in the study area); basal portions of terrace 1 contain fossils of white spruce, tamarack, and many plant species today characteristic of the cool-temperate Mixed Mesophytic Forest Association. Terrace 1 fossil deposits occur in fluviatile terraces along tributary streams of the Mississippi River at elevations 15 to 30 m above the maximum recorded historic flood stage of the Mississippi River. The plant macrofossils represent remains of species that grew at or very near the site of deposition; they were not “rafted in” by floodwaters of the Mississippi River. We present quantitative data for plant macrofossils and pollen that support our hypothesis that at least local cooling along the Blufflands of Mississippi and Louisiana promoted southward migrations of mixed mesophytic forest species and certain boreal species along this major pathway during late Wisconsin continental glaciation.
Archaeology · Geography · Glacial period · Holocene · Macrofossil · Terrace (agriculture) · Botany, Ecology, and Taxonomy Studies · Geology · Geology and Paleoclimatology Research · Paleontology · Rangeland and Wildlife Management
Late Quaternary Floodplain Sedimentation along the Pomme de Terre River, Southern Missouri
Influences of Relative Sea-Level Rise and Mississippi River Delta Plain Evolution on the Holocene Middle Amite River, Southeastern Louisiana
Late-Quaternary Vegetation History at White Pond on the Inner Coastal Plain of South Carolina
Late Wisconsinan Vegetation and Environment of the Tunica Hills Region, Louisiana/Mississippi
Tunica Hills Revisited
Accelerator Radiocarbon Date Indicates Mid-Holocene age for Hickory Nut from Indiana Late-Glacial Sediments
Age of Tunica Hills (Louisiana-Mississippi) Quaternary Fossiliferous Creek Deposits; Problems of Radiocarbon Dates and Intermediate Valley Terraces in Coastal Plains
Terrace Stratigraphy in the Tunica Hills of Louisiana
Vegetation East of the Rocky Mountains 18,000 Years Ago
Prospects for interregional correlations using Wisconsin and Holocene aridity episodes, northern Gulf of Mexico coastal plain
Age and Significance of Fossil White Spruce ( Picea glauca ), Tunica Hills, Louisiana-Mississippi
Quaternary Vegetation History of the Mississippi Embayment
Comment on “The Tunica Hills, Louisiana-Mississippi
Southeastern Archaic Mounds
Proboscidea from the Big Cypress Creek fauna, Deweyville Formation, Harris County, Texas
Numerical chronology of Pleistocene coastal plain and valley development; extensive aggradation during glacial low sea-levels
Late glacial aster prairie at the Aubrey Clovis site, North Texas, USA
Meander Scars as Evidence of Major Climate Change in Southwest Louisiana
| Unique citing works | 18 |
|---|---|
| Citations per year | 0,38 |
| Citation span | 1978 - 2019 (42) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 5 |