Figure F25. Manifestations of the Marshall Paraconformity in the ENZOSS region. This several-million-year-long current-induced unconformity is present across all sedimentary facies and water depths between the inner shelf and the lower slope, and thereby marks the early Oligocene startup of the seabed to sea-surface ACC. A. Outcrop view of cross-bedded, glauconitic, calcarenite sediment drifts of the early Miocene (Lw) Weka Pass Limestone, Waihao Forks. The Marshall Paraconformity outcrops nearby (cf. Ward and Lewis, 1975) but here lies obscured beneath the grassy talus slope. Figures for scale. B. Typical onland shallow-water outcrop of the paraconformity at its type locality, Squires Farm, Pareora district (cf. Gair, 1959). Intensely bioturbated late Oligocene (Ld) Concord Greensand overlies and infills Thalassinoides burrows in the underlying latest Eocene-early Oligocene (early Lwh) marly Amuri Limestone, which is also intensely bioturbated. Note bioerosional remnants of the underlying marl incorporated within the base of the greensand. Hammer handle = 32 cm. C. Paraconformity as developed farther south, near Dunedin. Late Oligocene (Ld) Concord Greensand penetrating via Chondrites burrows into underlying bioturbated late Eocene (Ak-Ar) Burnside Marl (cf. Bishop and Turnbull, 1996). Bioerosional fragments of marl are conspicuous within the basal part of the Concord Greensand. Scale in millimeters. D. Paraconformity developed at Site 1123. Basal sediments of the early Miocene (Po) Chatham drift overlies and fills Chondrites burrows in early Oligocene (early Lwh) nannofossil chalk of the pre-ENZOSS sediment apron (cf. Carter, R., McCave, Richter, Carter, L., et al., 1998). Black bar = 5 cm. E. Paraconformity developed at Site 1124. Basal sediments of a late Oligocene (Ld) DWBC sediment drift overlies and fills Chondrites burrows in early Oligocene (early Lwh) nannofossil chalk of the pre-ENZOSS sediment apron (cf. Carter, R., McCave, Richter, Carter, L., et al., 1998). Black bar = 5 cm. See caption to Figure F6 for key to New Zealand biostratigraphic stage abbreviations.

Figure F25. Manifestations of the Marshall Paraconformity in the ENZOSS region. This several-million-year-long current-induced unconformity is present across all sedimentary facies and water depths between the inner shelf and the lower slope, and thereby marks the early Oligocene startup of the seabed to sea-surface ACC. A. Outcrop view of cross-bedded, glauconitic, calcarenite sediment drifts of the early Miocene (Lw) Weka Pass Limestone, Waihao Forks. The Marshall Paraconformity outcrops nearby (cf. Ward and Lewis, 1975) but here lies obscured beneath the grassy talus slope. Figures for scale. B. Typical onland shallow-water outcrop of the paraconformity at its type locality, Squires Farm, Pareora district (cf. Gair, 1959). Intensely bioturbated late Oligocene (Ld) Concord Greensand overlies and infills Thalassinoides burrows in the underlying latest Eocene-early Oligocene (early Lwh) marly Amuri Limestone, which is also intensely bioturbated. Note bioerosional remnants of the underlying marl incorporated within the base of the greensand. Hammer handle = 32 cm. C. Paraconformity as developed farther south, near Dunedin. Late Oligocene (Ld) Concord Greensand penetrating via Chondrites burrows into underlying bioturbated late Eocene (Ak-Ar) Burnside Marl (cf. Bishop and Turnbull, 1996). Bioerosional fragments of marl are conspicuous within the basal part of the Concord Greensand. Scale in millimeters. D. Paraconformity developed at Site 1123. Basal sediments of the early Miocene (Po) Chatham drift overlies and fills Chondrites burrows in early Oligocene (early Lwh) nannofossil chalk of the pre-ENZOSS sediment apron (cf. Carter, R., McCave, Richter, Carter, L., et al., 1998). Black bar = 5 cm. E. Paraconformity developed at Site 1124. Basal sediments of a late Oligocene (Ld) DWBC sediment drift overlies and fills Chondrites burrows in early Oligocene (early Lwh) nannofossil chalk of the pre-ENZOSS sediment apron (cf. Carter, R., McCave, Richter, Carter, L., et al., 1998). Black bar = 5 cm. See caption to Figure F6 for key to New Zealand biostratigraphic stage abbreviations.