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Record W2002516274 · doi:10.4043/23797-ms

Canada Basin Revealed

2012· article· en· W2002516274 on OpenAlex

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.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.

Bibliographic record

VenueOTC Arctic Technology Conference · 2012
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicGeological Studies and Exploration
Canadian institutionsNatural Resources Canada
Fundersnot available
KeywordsGeologyStructural basinSeafloor spreadingGrabenBasementPaleontologySedimentary rockSubsidenceArchipelagoArcticRidgeGeomorphologyOceanography

Abstract

fetched live from OpenAlex

Abstract More than 15,000 line-km of new regional seismic reflection and refractiondata in the western Arctic Ocean provide insights into the tectonic andsedimentologic history of Canada Basin, permitting development of new geologicunderstanding in one of Earth's last frontiers. These new data support arotational opening model for southern Canada Basin. There is a central basementridge possibly representing an extinct spreading center with oceanic crustalvelocities and blocky basement morphology characteristic of spreading centrecrust surrounding this ridge. Basement elevation is lower in the south, mostlydue to sediment loading subsidence. The sedimentary succession is thickest inthe southern Beaufort Sea region, reaching more than 15 km, and generally thinsto the north and west. In the north, grabens and half-grabens are indicative ofextension. Alpha-Mendeleev Ridge is a large igneous province in northernAmerasia Basin, presumably emplaced synchronously with basin formation. Itoverprints most of northern Canada Basin structure. The seafloor andsedimentary succession of Canada Basin is remarkably flat-lying in its centralregion, with little bathymetric change over most of its extent. Reflectionsthat correlate over 100s of kms comprise most of the succession and on-lapbathymetric and basement highs. They are interpreted as representing depositsfrom unconfined turbidity current flows. Sediment distribution patterns reflectchanging source directions during the basin's history. Initially, probably lateCretaceous to Paleocene synrift sediments sourced from the Alaska andMackenzie-Beaufort margins. This unit shows a progressive series of onlapunconformities with a younging trend towards Alpha and Northwind ridges, likelya response to contemporaneous subsidence. Sediment source direction appeared toshift to the Canadian Arctic Archipelago margin for the Eocene and Oligocene, likely due to uplift of Arctic islands during the Eurekan Orogeny. The finalstage of sedimentation appears to be from the Mackenzie-Beaufort region for theMiocene and Pliocene when drainage patterns shifted in the Yukon and Alaska tothe Mackenzie valley. Upturned reflections at onlap positions may indicatesyn-depositional subsidence. There is little evidence, at least at a regionalseismic data scale, of contemporaneous or post-depositional sediment reworking, suggesting little large-scale geostrophic or thermohaline-driven bottom currentactivity.

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.237
Threshold uncertainty score0.998

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0030.000

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.

Opus teacher head0.020
GPT teacher head0.188
Teacher spread0.167 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it