Women in Geoscience—Dr. Nadia Malaspina, metamorphic petrologist (Italy) @IRISEarthquakeScience

Uploaded September 2021 | Updated September 2026, 1 week ago

IF/THEN Women in Geoscience Series. Short videos / animations featuring a broad range of women in geoscience from around the world. These inspiring scientists describe their work, their interests, and their desire to inspire young women to pursue STEM and STEAM. (Science, Technology, Engineering, Art, Mathematics)

IF/THEN (supported by AAAS, American Association for the Advancement of Science) partners with Incorporated Research Institutions for Seismology (IRIS) and Earth Sciences Animated.

Women in Geoscience—Dr. Nadia Malaspina, metamorphic petrologist (Italy)

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$Earthquake Faults—3 basic types...in brief This was created using excerpts from the longer animation called, “Earthquake Faults, Plate Boundaries, & Stress” [to be released September 2019; STAY TUNED!!] A fault is a rock fracture where the two sides have been displaced relative to each other. Faults are categorized into three general groups based on the sense of slip or movement. Normal fault—the block above the inclined fault moves down relative to the block below the fault. This fault motion is caused by tensional forces and results in extension. [Other names: normal-slip fault, tensional fault or gravity fault] Examples include Basin & Range faults. Reverse fault—the block above the inclined fault moves up relative to the block below the fault. This fault motion is caused by compressional forces and results in shortening. A reverse fault is called a thrust fault if the dip of the fault plane is small. [Other names: reverse-slip fault or compressional fault.] Examples include the Rocky Mountains and the Himalayan Mountains. Strike-slip fault—movement of blocks along a fault is horizontal and the fault plane is nearly vertical. If the block on the far side of the fault moves to the left, as shown in this animation, the fault is called left-lateral (Figure 2). If it moves to the right, the fault is called right-lateral. The fault motion of a strike-slip fault is caused by shearing forces. [Other names: trans current fault, lateral fault, tear fault or wrench fault.] Examples include the San Andreas Fault, California; Anatolian Fault, Turkey. Narrated by Dr. Wendy Bohon Animated by Jenda Johnson, Earth Sciences Animated$

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