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Thunderhead Sandstone (Neoproterozoic; The Sinks, Great Smoky Mountains, Tennessee, USA) 13
Thunderhead Sandstone (Neoproterozoic; The Sinks, Great Smoky Mountains, Tennessee, USA) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1

Faulted clasts in tillite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Straight Lake West roadcut, north of Temagami, Ontario, Canada) 2
Faulted clasts in tillite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Straight Lake West roadcut, north of Temagami, Ontario, Canada) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Mario Rubalcaba
Mario Rubalcaba
by Incase.

クリエイティブ・コモンズ 表示 2.1


Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 25
Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 25
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 17
Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 17
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 55
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 55
by James St. John

クリエイティブ・コモンズ 表示 2.1


Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 44
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 44
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 16
Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 16
by James St. John

クリエイティブ・コモンズ 表示 2.1

Quartz tholeiite basalt lava flow (flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 4
Quartz tholeiite basalt lava flow (flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1


Vertebrate tooth in nonmarine black shale (Cow Branch Formation, Upper Triassic; Route 220 roadcut north of the Dan River, Rockingham County, North Carolina, USA) 1
Vertebrate tooth in nonmarine black shale (Cow Branch Formation, Upper Triassic; Route 220 roadcut north of the Dan River, Rockingham County, North Carolina, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Shatterconed sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 152
Shatterconed sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 152
by James St. John

クリエイティブ・コモンズ 表示 2.1

Clast-rich mixtite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Percival Lake roadcut, Ontario, Canada) 10
Clast-rich mixtite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Percival Lake roadcut, Ontario, Canada) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1


Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 42
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 42
by James St. John

クリエイティブ・コモンズ 表示 2.1

Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 7
Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 9
Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1


Radiation reading of rock overhang enriched with secondary uranium minerals (Spine Road outcrop, Elliot Lake, Ontario, Canada)
Radiation reading of rock overhang enriched with secondary uranium minerals (Spine Road outcrop, Elliot Lake, Ontario, Canada)
by James St. John

クリエイティブ・コモンズ 表示 2.1

Quartz tholeiite basalt lava flow (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 10
Quartz tholeiite basalt lava flow (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 19
Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 19
by James St. John

クリエイティブ・コモンズ 表示 2.1


Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 22
Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 22
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 17
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 17
by James St. John

クリエイティブ・コモンズ 表示 2.1

Shatterconed sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 97
Shatterconed sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 97
by James St. John

クリエイティブ・コモンズ 表示 2.1


Glacially-smoothed & striated tillite outcrop (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Straight Lake West roadcut, north of Temagami, Ontario, Canada) 2
Glacially-smoothed & striated tillite outcrop (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Straight Lake West roadcut, north of Temagami, Ontario, Canada) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 43
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 43
by James St. John

クリエイティブ・コモンズ 表示 2.1

Shatterconed sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 174
Shatterconed sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 174
by James St. John

クリエイティブ・コモンズ 表示 2.1


Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 80
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 80
by James St. John

クリエイティブ・コモンズ 表示 2.1

Quartz tholeiite basalt lava flow (flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 11
Quartz tholeiite basalt lava flow (flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1

Thunderhead Sandstone (Neoproterozoic; The Sinks, Great Smoky Mountains, Tennessee, USA) 9
Thunderhead Sandstone (Neoproterozoic; The Sinks, Great Smoky Mountains, Tennessee, USA) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1


Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 23
Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 23
by James St. John

クリエイティブ・コモンズ 表示 2.1

Grypania spiralis (Negaunee Iron-Formation, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 14
Grypania spiralis (Negaunee Iron-Formation, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 14
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga) 13
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1


Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 8
Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

Pinehall Formation (Upper Triassic; Oak Ridge Farms Road outcrop, Pittsylvania County, Virginia, USA) 17
Pinehall Formation (Upper Triassic; Oak Ridge Farms Road outcrop, Pittsylvania County, Virginia, USA) 17
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 12
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 12
by James St. John

クリエイティブ・コモンズ 表示 2.1


Quartzite & pebbly quartzite with jasper (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 4
Quartzite & pebbly quartzite with jasper (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 77
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 77
by James St. John

クリエイティブ・コモンズ 表示 2.1

Quartzite & jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 4
Quartzite & jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1


Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 27
Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 27
by James St. John

クリエイティブ・コモンズ 表示 2.1

Clast-rich mixtite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Percival Lake roadcut, Ontario, Canada) 20
Clast-rich mixtite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Percival Lake roadcut, Ontario, Canada) 20
by James St. John

クリエイティブ・コモンズ 表示 2.1

Clast-rich mixtite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Percival Lake roadcut, Ontario, Canada) 17
Clast-rich mixtite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Percival Lake roadcut, Ontario, Canada) 17
by James St. John

クリエイティブ・コモンズ 表示 2.1


Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 18
Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 18
by James St. John

クリエイティブ・コモンズ 表示 2.1

Shatterconed sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 11
Shatterconed sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1

Clast-rich mixtite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Percival Lake roadcut, Ontario, Canada) 16
Clast-rich mixtite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Percival Lake roadcut, Ontario, Canada) 16
by James St. John

クリエイティブ・コモンズ 表示 2.1


Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 79
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 79
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 29
Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 29
by James St. John

クリエイティブ・コモンズ 表示 2.1

Grypania spiralis (Negaunee Iron-Formation, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 19
Grypania spiralis (Negaunee Iron-Formation, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 19
by James St. John

クリエイティブ・コモンズ 表示 2.1


Radioactive rock overhang enriched with secondary uranium minerals (Spine Road outcrop, Elliot Lake, Ontario, Canada) 1
Radioactive rock overhang enriched with secondary uranium minerals (Spine Road outcrop, Elliot Lake, Ontario, Canada) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Venus in Furs
Venus in Furs
by Lost Albatross

クリエイティブ・コモンズ 表示-改変禁止 2.1

Quartzite & pebbly quartzite with jasper (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 11
Quartzite & pebbly quartzite with jasper (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1


Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 15
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 15
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 45
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 45
by James St. John

クリエイティブ・コモンズ 表示 2.1

Shatterconed sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 55
Shatterconed sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 55
by James St. John

クリエイティブ・コモンズ 表示 2.1


Grypania spiralis (Negaunee Iron-Formation, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 15
Grypania spiralis (Negaunee Iron-Formation, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 15
by James St. John

クリエイティブ・コモンズ 表示 2.1

Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 64
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 64
by James St. John

クリエイティブ・コモンズ 表示 2.1

Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 47
Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 47
by James St. John

クリエイティブ・コモンズ 表示 2.1


Quartzite & pebbly quartzite with jasper (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 7
Quartzite & pebbly quartzite with jasper (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

Quartzite & pebbly quartzite with jasper (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 10
Quartzite & pebbly quartzite with jasper (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1

Glacial striations on sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 10
Glacial striations on sandstone (Mississagi Formation, Paleoproterozoic, ~2.3-2.4 Ga; Ramsey Lake Road outcrop, Sudbury, Ontario, Canada) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1


Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 48
Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 48
by James St. John

クリエイティブ・コモンズ 表示 2.1

Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 29
Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 29
by James St. John

クリエイティブ・コモンズ 表示 2.1

Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 6
Radioactive quartz-pebble conglomerate (Matinenda Formation, Paleoproterozoic, ~2.3-2.48 Ga; Spine Road outcrop, Elliot Lake, Ontario, Canada) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1



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