STRUCTURE CONTROLS ON GOLD DEPOSITS IN THE CARIBOO GOLD MINING DISTRICT, BRITISH COLUMBIA, CANADA
Notice bibliographique
Résumé
The Cariboo gold mining district is located in central British Columbia, Canada. Recorded gold production from the area totals more than 4.0 million ounces, including an estimated 2.7 million ounces from placer mining and 1.3 million ounces from lode mining. The district consists of two dominant metallogenic series of gold deposits: quartz vein and pyrite replacement styles. The quartz vein series includes strike vein, diagonal vein, orthogonal vein, and northerly veins, while the pyrite replacement includes replacement in limestone and that in calcareous clastic rock. The district is situated within the Quesnel Highlands on the eastern edge of the Interior Plateau, which are the remnants of rolling plateau formed initially from bedrocks lain down as the ancient North American Plate moved westwards colliding with offshore seabed and island groups. The district is situated within the Cariboo Gold Belt, part of the Omineca Belt of the Canadian Cordillera, a world-class producer of gold that has had a history of mining dating from the Cariboo Gold Rush in the 1860’s. The district consists of a late Proterozoic and/or Paleozoic sequence of continental shelf and slope deposits developed adjacent to the craton of Ancestral North America, and includes clastic sedimentary rocks along with lesser amounts of volcanic rocks and carbonates. Rocks of the district were subjected to an early period of ductile deformation that resulted in westward directed, asymmetrical folds plunging shallowly to the northwest. During late Cretaceous to early Tertiary time, the area was disrupted by northwest trending dextral strike-slip faults such as the Willow Fault, a major strike-slip fault in the area. The north striking cross faults are an important control for the gold vein mineralization. The district is underlain by a northwest striking, moderately northeast dipping sequence of rocks on the steep, overturned limb of a southwest-verging antiform, which, in turn, is on the northeast flank of the Island Mountain anticlinorium. Stratigraphic position, host rock lithologies, and proximity to north-striking fault zones are important guides to the different styles of gold mineralization recognized in the district. At least three phases of folding and fabric development occur in the district and are responsible for the major regional map patterns. Faults and shear zones developed in the district are of several generations and orientations.
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».