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Basalt lava flows (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Lake Superior shoreline exposure along the North Shore Scenic Railroad line, just northeast of Duluth, Minnesota, USA) 3
Basalt lava flows (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Lake Superior shoreline exposure along the North Shore Scenic Railroad line, just northeast of Duluth, Minnesota, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Quartz tholeiite basalt lava flows (flow B over flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 5
Quartz tholeiite basalt lava flows (flow B over flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
DSC_3930
DSC_3930
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

DSC_9679
DSC_9679
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, St. Croix Falls, Wisconsin, USA) 7
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, St. Croix Falls, Wisconsin, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Basalt lava flow (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Leif Ericson Park, Duluth, Minnesota, USA) 4
Basalt lava flow (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Leif Ericson Park, Duluth, Minnesota, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

DSC_0236
DSC_0236
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Quartz tholeiite basalt lava flows (flow B over flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 2
Quartz tholeiite basalt lava flows (flow B over flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Quartz tholeiite basalt lava flow (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 7
Quartz tholeiite basalt lava flow (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

DSC_6536
DSC_6536
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 3
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 5
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Lakeshore beach gravel (upper Holocene; derived from the North Shore Volcanic Series, Mesoproterozoic, 1.1 Ga; Burlington Bay, Two Harbors, Minnesota, USA) 4
Lakeshore beach gravel (upper Holocene; derived from the North Shore Volcanic Series, Mesoproterozoic, 1.1 Ga; 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

サイズ変更など
Intergranular calcite in autobrecciated amygdaloidal tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 6
Intergranular calcite in autobrecciated amygdaloidal tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Millbrig Bentonite in limestone succession (Upper Ordovician, 454 Ma; Warren County core, Ohio, USA) 3
Millbrig Bentonite in limestone succession (Upper Ordovician, 454 Ma; Warren County core, Ohio, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 20
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 20
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Basalt lava flows (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Lake Superior shoreline exposure along the North Shore Scenic Railroad line, just northeast of Duluth, Minnesota, USA) 2
Basalt lava flows (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Lake Superior shoreline exposure along the North Shore Scenic Railroad line, just northeast of Duluth, Minnesota, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 10
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (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

サイズ変更など

DSC_1113
DSC_1113
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 12
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 12
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 18
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 18
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 14
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 14
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Basalt lava flow (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Lake Superior shoreline exposure along the North Shore Scenic Railroad line, just northeast of Duluth, Minnesota, USA) 4
Basalt lava flow (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Lake Superior shoreline exposure along the North Shore Scenic Railroad line, just northeast of Duluth, Minnesota, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Old Red Sandstone (Devonian; Connor Pass, Ireland) 1
Old Red Sandstone (Devonian; Connor Pass, Ireland) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

DSC_6523
DSC_6523
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Intergranular calcite in autobrecciated amygdaloidal tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 2
Intergranular calcite in autobrecciated amygdaloidal tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Niagara Gorge
Niagara Gorge
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 13
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Intergranular calcite in autobrecciated amygdaloidal tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 3
Intergranular calcite in autobrecciated amygdaloidal tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Large quartz-laumontite amygdule in quartz tholeiite basalt lava flow (Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 8
Large quartz-laumontite amygdule in quartz tholeiite basalt lava flow (Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Eclogite (Late Silurian to Early Devonian, ~400-423 Ma; Nordfjord area, Sogn og Fjordane County, Norway) 9
Eclogite (Late Silurian to Early Devonian, ~400-423 Ma; Nordfjord area, Sogn og Fjordane County, Norway) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 34
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 34
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 39
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 39
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Rhyolite (Palisade Rhyolite, North Shore Volcanic Group, Mesoproterozoic, 1096-1097 Ma; Rt. 1 roadcut just north of Ilgen City, Minnesota, USA) 12
Rhyolite (Palisade Rhyolite, North Shore Volcanic Group, Mesoproterozoic, 1096-1097 Ma; Rt. 1 roadcut just north of Ilgen City, Minnesota, USA) 12
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 1
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
DSC_1121
DSC_1121
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 29
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 29
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, St. Croix Falls, Wisconsin, USA) 4
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, St. Croix Falls, Wisconsin, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Eclogite (Late Silurian to Early Devonian, ~400-423 Ma; Nordfjord area, Sogn og Fjordane County, Norway) 8
Eclogite (Late Silurian to Early Devonian, ~400-423 Ma; Nordfjord area, Sogn og Fjordane County, Norway) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 35
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 35
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
DSC_5913
DSC_5913
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
DSC_3907
DSC_3907
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 27
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 27
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Basalt lava flows (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Lake Superior shoreline exposure along the North Shore Scenic Railroad line, just northeast of Duluth, Minnesota, USA) 1
Basalt lava flows (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Lake Superior shoreline exposure along the North Shore Scenic Railroad line, just northeast of Duluth, Minnesota, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 31
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 31
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Quartz tholeiite basalt lava flows (flow B over flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 6
Quartz tholeiite basalt lava flows (flow B over flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 11
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
First Creek south of Morrow
First Creek south of Morrow
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Basalt lava flows (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Leif Ericson Park, Duluth, Minnesota, USA) 7
Basalt lava flows (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Leif Ericson Park, Duluth, Minnesota, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 2
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, St. Croix Falls, Wisconsin, USA) 3
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, St. Croix Falls, Wisconsin, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Lakeshore beach gravel (upper Holocene; derived from the North Shore Volcanic Series, Mesoproterozoic, 1.1 Ga; Burlington Bay, Two Harbors, Minnesota, USA) 1
Lakeshore beach gravel (upper Holocene; derived from the North Shore Volcanic Series, Mesoproterozoic, 1.1 Ga; Burlington Bay, Two Harbors, Minnesota, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Calloway Creek Limestone
Calloway Creek Limestone
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 9
Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Basalt lava flows (left) & volcanic lithic sandstone (right background) (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Leif Ericson Park, Duluth, Minnesota, USA)
Basalt lava flows (left) & volcanic lithic sandstone (right background) (North Shore Volcanic Group, Mesoproterozoic, ~1.1 Ga; Leif Ericson Park, Duluth, Minnesota, USA)
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
DSC_9115
DSC_9115
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 7
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 22
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 22
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
DSC_3357
DSC_3357
by Kyle Hartshorn

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 23
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 23
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など


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