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Record W4244892174 · doi:10.29173/ikc3014

Pre- and post-kimberlite emplacement thermal history of Cretaceous and Tertiary sediments, Lac de Gras, Northwest Territories, Canada

2019· article· en· W4244892174 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.
fundA Canadian funder is recorded on the work.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.

Bibliographic record

VenueInternational Kimberlite Conference Extended Abstracts: 2003 · 2019
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicGeological Studies and Exploration
Canadian institutionsGeological Survey of Canada
FundersNatural Resources Canada
KeywordsCretaceousGeologyKimberliteGeochemistryPaleontologyMantle (geology)

Abstract

fetched live from OpenAlex

Optical analyses of contemporaneous, wood-derived organic matter, and older Cretaceous organic matter within shale xenoliths in DO-18 kimberlite, Lac de Gras, Northwest Territories, Canada, show that the kimberlite has undergone insignificant, if any burial since emplacement, and that Cretaceous strata in the area, prior to kimberlite emplacement, had reached thermal maturity levels equivalent to ~ 0.25-0.30 %Ro vitrinite. This level of maturity is corroborated by VIS fluorescence of sporinites, dinoflagellates and prasinophytes within the Cretaceous xenoliths. Porosity of shale xenoliths recovered from a number of kimberlites average 26 %. All data are consistent with a thickness of ~ > 1 to 1.5 km of Cretaceous strata (~ Albian to Maastrichtian ?) in the study area, most of which was likely eroded sometime prior to kimberlite emplacement (see

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 score0.071
Threshold uncertainty score0.999

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)0.0010.000

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 head0.009
GPT teacher head0.196
Teacher spread0.188 · 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