Early Ordovician Connell Mountain porphyry Cu deposit, Woodstock, New Brunswick, Canada: geochemical, S isotopic, and Re–Os geochronologic constraints on adakitic slab failure magmatism

Atlantic Geoscience 2026 Open access

Read full text
Authors: David R. Lentz, Robert A. Creaser, Kathleen G. Thorne, Fazilat Yousefi
DOI: 10.4138/atlgeo.2026.003
Cited by: 1
References: 63

Abstract

The Early Ordovician subvolcanic Gibson intrusive complex, located near Woodstock, New Brunswick, Canada, is composed of the main Gibson pluton, and mineralized marginal (satellite) stocks at Connell Mountain, Bulls Creek, and the tuffisitic diatreme at Sharp Mountain. The high-level Connell Mountain hornblende-plagioclase porphyritic tonalite stock (~100 MPa) is a small cupola, 1500 m north of the main Gibson pluton, and hosts low-grade porphyry copper mineralization (23 Mt at 0.18% Cu). These intrusions are calc-alkalic, metaluminous, and magnesian, with low TiO2 (0.16 to 0.38 wt.%) and Zr (67 to 92 ppm), and low Nb (4.3–7.7 ppm) and Ta (

Fields of Study & Subjects

Geological and Geochemical Analysis Paleontology and Stratigraphy of Fossils Mineralogy and Gemology Studies

Publication details

Journal / source
Atlantic Geoscience
Publisher
University of New Brunswick Libraries - UNB
Volume
62
Pages
039–060
Publication date
24 February 2026
Language
EN