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Record W7096510855

evolution of the Iapetus Ocean

2016· article· en· W7096510855 on OpenAlexaboutno aff

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicGeological and Geochemical Analysis
Canadian institutionsnot available
Fundersnot available
KeywordsPrecambrianDalradianGeosynclineRiftFibrous jointPlate tectonicsTectonics
DOInot available

Abstract

fetched live from OpenAlex

Anderton SUMMARY: During the late Precambrian the Dalradian environment evolved from a rela-tively stable subsiding shelf into a series of fault-bounded blocks and basins. This increase in tectonic instability can be interpreted as a precursor to the continental rifting which led to the inception of the Iapetus Ocean at the end of the Precambrian, or base of the Cambrian, and was marked in the Dalradian terrain by the eruption of the Tayvallich Volcanics. A comparison of the late Precambrian history of the areas now adjacent to the Iapetus suture suggests that prior to this rifting the Greenland-northern Britain-NW Newfoundland area and Scandinavia formed part of the same plate with northern Norway lying close to northern Britain. As the evolution of all these areas was dominated by the opening of Iapetus during the Cambrian followed by closing initiated by subduction in the early Ordovician, many aspects of their history are similar. Southern Britain and SE Newfoundland, however, had a quite different late Precambrian history. They probably formed a microcontinental plate which originated at a considerable distance from northern Britain and which, until the closure of the Iapetus Ocean, was never in contact with the rest of the Caledonian belt.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.033
Threshold uncertainty score0.066

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0010.001
Scholarly communication0.0010.000
Open science0.0000.001
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0040.001

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 head0.006
GPT teacher head0.154
Teacher spread0.148 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2016
Admission routes1
Has abstractyes

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