The Past, Present, and Future Mississippi River
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The Mississippi River Valley and its basin have undergone major changes since the Pliocene. Pliocene ancestral Mississippi River headwaters drained southern Alberta, Saskatchewan, Manitoba, and southwestern Ontario in a Pliocene drainage basin that was at least 30% greater than the modern Mississippi River basin. This large drainage basin is supported by Pliocene paleodrainage in Alberta and Saskatchewan and paleochannel analyses of Pliocene Mississippi River meander bends preserved in the Pliocene Mississippi River terrace sediments of the Upland Complex near Memphis, Tennessee. Near Memphis, the Pliocene discharge is calculated to have been six to eight times the discharge of the modern Mississippi River. The Pliocene Mississippi River drainage flowed east across Alberta and Saskatchewan, south across Paleozoic sedimentary rocks that covered the Canadian Shield in Manitoba and Ontario, and into North Dakota and South Dakota along the ancestral Red River. Early Pleistocene continental glaciation removed the sedimentary rocks covering the current Canadian Shield region of Manitoba and Ontario. Sea level declines of 120 m during the Pleistocene eroded central and southern Mississippi River Valley sediments of the Mississippi Embayment, and the base of Pliocene Upland Complex terrace remnants (Pliocene Mississippi River sediments) is now 70 m above the base of Holocene Mississippi River floodplain sediments near Memphis. This 70-m elevation difference is attributed to a +25-m Pliocene sea level and 45 m of Mississippi River Valley isostatic uplift caused by the Pleistocene denudation of the Mississippi River Valley. The erosion and isostatic uplift of the Mississippi Valley have influenced the state of stress in the valley and are in part responsible for reactivating Cambrian basement faults of the Reelfoot Rift and consequent earthquakes of the New Madrid seismic zone. Continuing Holocene glacial isostatic uplift of Manitoba and Ontario is returning the drainage of these provinces to their Pliocene southerly flow. We believe the north-flowing Red River, Lake Winnipeg, and southern 200 km of the Nelson River will reverse to a southerly flow to join the Mississippi River system between 6 and 8 ka if Canadian continental glaciation does not return.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it