This science ClipArt gallery offers 28 illustrations of geology, including structure and composition of land, minerals, and fossilized organisms.

Diagrammatic section of an off-shore bar and the barachois or lagoon enclosed by it.

Off-shore Bar

Diagrammatic section of an off-shore bar and the barachois or lagoon enclosed by it.

"Idealized profile to show the supposed structure in the rampart slope of the basin to the west of Ragland." -Walcott, 1901

Basin

"Idealized profile to show the supposed structure in the rampart slope of the basin to the west of Ragland."…

"Section of a beach defined by High- and Low-water Mark." -Geikie, 1893

Beach Section

"Section of a beach defined by High- and Low-water Mark." -Geikie, 1893

Cataract Creek rises on the slopes of Mount Bullengarook and drains across the lava flow towards the south to join Pyrites Creek. Upper Cataract Creek, near Big Canon, Colorado.

Cataract Creek

Cataract Creek rises on the slopes of Mount Bullengarook and drains across the lava flow towards the…

Clay-iron stone concretion, Connecticut valley.

Clay-iron Stone Concretion

Clay-iron stone concretion, Connecticut valley.

"Plan of coast-bars and lagoons. Coast of Florida." -Geikie, 1893

Coast Bars

"Plan of coast-bars and lagoons. Coast of Florida." -Geikie, 1893

Diagrammatic cross-section of a cut off basin, and the deposits formed in it after complete evaporation.

Cut-off Basin

Diagrammatic cross-section of a cut off basin, and the deposits formed in it after complete evaporation.

"Sand-dunes affecting land-drainage." -Geikie, 1893

Dunes

"Sand-dunes affecting land-drainage." -Geikie, 1893

Diagram of an ancient fissure in fine Upper Silurian limestone, etc., filled with rounded grains of sand, secondarily enlarged, and including fragments of the wall rock.

Fissure in Limestone

Diagram of an ancient fissure in fine Upper Silurian limestone, etc., filled with rounded grains of…

Globigerina ooze from the deep sea. Besides the foraminiferal shells there are pteropods, ostracods, and other organic structures.

Globigerina Ooze

Globigerina ooze from the deep sea. Besides the foraminiferal shells there are pteropods, ostracods,…

"Block of Stone containing Graptolites. GRAPTOLITE. A specimen or a species of Paleozoic coelenterate organisms, commonly supposed to be hydrozoans, resembling the living sertularians." -Whitney, 1911

Graptolites in Stone

"Block of Stone containing Graptolites. GRAPTOLITE. A specimen or a species of Paleozoic coelenterate…

Diagram showing the relative magnitude of the hiatus in the various sections in a compound regressive-transgressive series.

Magnitude of the Hiatus

Diagram showing the relative magnitude of the hiatus in the various sections in a compound regressive-transgressive…

Plan of the joints in the chalk cliffs of Treport, showing how they influence the process of erosion.

Joints

Plan of the joints in the chalk cliffs of Treport, showing how they influence the process of erosion.

"Conduit of Tilford laccolith, showing porphyry (P) breaking across limestone (L)." -Walcott, 1901

Laccolith

"Conduit of Tilford laccolith, showing porphyry (P) breaking across limestone (L)." -Walcott, 1901

Ideal section through a Maar of the Eifel showing the old crater funnel and pipe.

Maar of the Eifel

Ideal section through a Maar of the Eifel showing the old crater funnel and pipe.

Marmorization of chalk beds by basalt. Island of Rathlin on coast of Antrim, Ireland.

Marmorization of Chalk Beds

Marmorization of chalk beds by basalt. Island of Rathlin on coast of Antrim, Ireland.

"Rupture of a Mountain.—There is no doubt, but in the operations of nature, great effects are sometimes produced among mountains, by a small quantity of water finding its way to a reservoir in the crevices of the rocks far beneath. Suppose, in the interior of a mountain, there should be a space of ten yards square, and an inch deep, filled with water, and closed up on all sides; and suppose that, in the course of time, a small fissure, no more than an inch in diameter, should be openeing by the water, from the height of two hundred feet above, down to this little reservoir. The consequence might be, that the side of the mountain would burst asunder, for the pressure, under the circumstances supposed, would be equal to the weight of five thousand tons." —Comstock, 1850

Mountain Rupture

"Rupture of a Mountain.—There is no doubt, but in the operations of nature, great effects are…

Mud cracks are created when a mud-flat is exposed to air or sun to dry.

Mud Cracks

Mud cracks are created when a mud-flat is exposed to air or sun to dry.

This illustration shows the calcareous shell Nodosaria vulgaris. These shells are mostly very small, and yet through their abundance they have been very important in limestone-making.

Nodosaria Vulgaris

This illustration shows the calcareous shell Nodosaria vulgaris. These shells are mostly very small,…

Modern Foraminiferal types - Orbulina.

Orbulina

Modern Foraminiferal types - Orbulina.

"Microscopic Section of artificial Porphyrine." -Taylor, 1904

Porphyrine

"Microscopic Section of artificial Porphyrine." -Taylor, 1904

"A reservoir in the geological sense is that portion of a sand-body or other rock in place, with pores of sufficient number and size as to be capable of holding and yielding a commercial quantity of oil or gas if they are present. It includes the whole porous volume whether it contains water, oil or gas." -Johnson, 1916

Reservoir

"A reservoir in the geological sense is that portion of a sand-body or other rock in place, with pores…

Sugar Loaf is a 75-foot-high landlocked rock or stack in the interior of Mackinac Island in Lake Huron. Created by erosion during the period of postglacial Lake Algonquin, Sugar Loaf is the largest post-glacial erosion feature in the Straits of Mackinac.

Sugar Loaf Rock

Sugar Loaf is a 75-foot-high landlocked rock or stack in the interior of Mackinac Island in Lake Huron.…

A foraminiferal shell or the Miliola type. Note that each new chamber covers all preceding ones. Important limestone builder.

A Foraminiferal Shell

A foraminiferal shell or the Miliola type. Note that each new chamber covers all preceding ones. Important…

"Diagram showing the genetic relations of the different soil classes."—Finley, 1917

Classes of soil

"Diagram showing the genetic relations of the different soil classes."—Finley, 1917

Apparatus for breaking a plate of glass by torsion, with an example of results produced.

Torsion Apparatus

Apparatus for breaking a plate of glass by torsion, with an example of results produced.

Arrangement of fractures in a large plate of glass which was broken by torsion.

Glass Broken by Torsion

Arrangement of fractures in a large plate of glass which was broken by torsion.

Plate tracery, Lillington, Northants.

Tracery

Plate tracery, Lillington, Northants.