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Record W4392492141

Mineralogical and petrogeochemical characteristics of the Mesoproterozoic Pasha Ladoga volcanic sedimentary basin and its basement (Baltic shield, Russia). Inferences on the genesis of unconformity related uranium deposits

2005· preprint· fr· W4392492141 on OpenAlexaboutno aff
Vladimir Lobaev

Bibliographic record

VenueOpenGrey (Institut de l'Information Scientifique et Technique) · 2005
Typepreprint
Languagefr
FieldEarth and Planetary Sciences
TopicGeological Studies and Exploration
Canadian institutionsnot available
Fundersnot available
KeywordsGeologyGeochemistryUnconformityBasementSedimentary rockVolcanoBaltic ShieldStructural basinUranium oreUraniumGeomorphologyTephraPrecambrianArchaeology
DOInot available

Abstract

fetched live from OpenAlex

Une étude minéralogique et géochimique du bassin volcano-sédimentaire clastique intracontinental mésoprotérozoique (Riphéen) de Pasha Ladoga (Carélie, Russie) ainsi que des minéralisations uranifères associées et des lithologies du socle sous-jacent a été réalisée. Une comparaison avec d'autres districts fortement minéralisés d'âge et de lithologie comparables indique qui les sédiments clastiques du bassin de Pasha Ladoga sont nettement moins matures que ceux des bassins fortement minéralisés de l'Athabasca (Canada) et de Kombolgie (Australie). Toutefois, des circulations importantes de fluides ont été mises en evidence dans les roches métamorphiques de l'Archéen et du Paléoprotérozoique et les granites rapakivi du socle, ainsi que dans les sediments clastiques sus-jacent dans la région de Pasha Ladoga, où les gisements d'uranium de type discordance de la zone de Karkou ont été découverts. Ces circulations de fluides ont conduit à une altération a l'échelle régionale du zircon et, dans une moindre de mesure, de la monazite, ainsi qu'à la formation de chlorites ferrifères et de carbonates dans les zones minéralisées.

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)0.000
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 score0.034
Threshold uncertainty score0.067

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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 head0.027
GPT teacher head0.227
Teacher spread0.200 · 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
Published2005
Admission routes1
Has abstractyes

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