# Earth Science (ESCI) courses College of the Siskiyous · 2026-2027 Catalog · 10 courses Source: https://siskiyous.elumenapp.com/catalog/cos26-27catalog/esci "Offered" lists sections in this catalog year's class schedules: Fall 2026, Winter 2027, Spring 2027. ### ESCI 0800 — Geology of Mount Shasta - **Units:** 0.5 - **Hours:** 0.33 hours lecture weekly, 0.56 hours lab weekly, 16 contact hours total - **Offered:** Fall 2026, 1 section (/c/college-of-the-siskiyous/schedule/fall-2026/esci.md) Geology of Mount Shasta introduces the tectonic setting, eruptive history and potential hazards of Mount Shasta during two evening sessions and a Saturday field trip. The field trip will give students opportunities to explore volcanic and glacial features on the flanks of this massive stratovolcano which studies indicate has produced at least three major eruptions during the past 10,000 years. ### ESCI 0810 — Geology of the Medicine Lake Volcano - **Units:** 0.5 - **Hours:** 0.33 hours lecture weekly, 0.56 hours lab weekly, 16 contact hours total - **Offered:** not on the Fall 2026, Winter 2027, Spring 2027 schedules Geology of the Medicine Lake Volcano introduces the tectonic setting, eruptive history and potential hazards of the Medicine Lake volcano during two evening sessions and a Saturday field trip. The field trip will give students opportunities to explore volcanic features in the summit caldera and on the flanks of this compositionally diverse back-arc volcano which last erupted only 900 years ago. ### ESCI 0820 — Geology of Lassen National Park - **Units:** 0.5 - **Hours:** 0.33 hours lecture weekly, 0.56 hours lab weekly, 16 contact hours total - **Offered:** Fall 2026, 1 section (/c/college-of-the-siskiyous/schedule/fall-2026/esci.md) Geology of Lassen National Park introduces the tectonic setting, eruptive history and potential hazards of the Lassen Volcanic Center during two evening sessions and a Saturday field trip. The field trip will give students opportunities to explore a variety of volcanic and glacial features in the western part of the Park and includes a hike to Bumpass Hell, the second largest geothermal area in North America. ### ESCI 0830 — Geology of Crater Lake - **Units:** 0.5 - **Hours:** 0.33 hours lecture weekly, 0.56 hours lab weekly, 16 contact hours total - **Offered:** not on the Fall 2026, Winter 2027, Spring 2027 schedules Geology of Crater Lake introduces the tectonic setting, eruptive history and potential hazards of Mount Mazama and the Crater Lake caldera during two evening sessions and a Saturday field trip. The field trip will give students opportunities to explore a variety of volcanic and glacial features around the margin of the caldera as well as visit one of the world’s most spectacular lakes. ### ESCI 0840 — Geology of the Eastern Klamath - **Units:** 0.5 - **Hours:** 0.33 hours lecture weekly, 0.56 hours lab weekly, 16 contact hours total - **Offered:** not on the Fall 2026, Winter 2027, Spring 2027 schedules Geology of the Eastern Klamath introduces the geologic structure, history and mineral resources of the Eastern Klamath Mountains during two evening sessions and a Saturday field trip. The field trip will give students opportunities to visit features ranging from the ancient Trinity ophiolite to the recent tailings produced by gold dredging along the Scott River. ### ESCI 0850 — Geology of Lava Beds National Monument - **Units:** 0.5 - **Hours:** 0.33 hours lecture weekly, 0.56 hours lab weekly, 16 contact hours total - **Offered:** Spring 2027, 1 section (/c/college-of-the-siskiyous/schedule/spring-2027/esci.md) Geology of Lava Beds National Monument introduces the monument's geologic setting, its tectonic and volcanic history, and its potential geologic hazards during two evening sessions and a Saturday field trip. The field trip will give students opportunities to explore young volcanic flows and craters, climb a cinder cone and descend to the icy floor a great lava tube. ### ESCI 0860 — Geology of Sacramento River Canyon - **Units:** 0.5 - **Hours:** 0.33 hours lecture weekly, 0.56 hours lab weekly, 16 contact hours total - **Offered:** not on the Fall 2026, Winter 2027, Spring 2027 schedules Geology of the Sacramento River Canyon introduces the canyon's geologic history, resources and potential hazards during two evening sessions and a Saturday field trip. The field trip will afford opportunities for students to visit many of the major geologic features exposed in the canyon, from the imposing Castle Crags granite to one of the spectacular caverns in the McCloud Limestone. ### ESCI 1140 — Oceanography - **Units:** 3 - **Hours:** 3 hours lecture weekly, 54 contact hours total - **Transfers to:** CSU, UC - **Offered:** Fall 2026, 1 section (/c/college-of-the-siskiyous/schedule/fall-2026/esci.md); Spring 2027, 1 section (/c/college-of-the-siskiyous/schedule/spring-2027/esci.md) Oceanography introduces the major physical and biological features of Earth's oceans and examines how they are connected. It explores the geologic processes that shape the ocean basins, the forces that move seawater and influence the planet's climate and coastlines, and the changing physical conditions and selective pressures—including those caused by human activities—that affect the nature and distribution of marine life. ### ESCI 1210 — Physical Geology/Lab - **Units:** 4 - **Hours:** 3 hours lecture weekly, 3 hours lab weekly, 108 contact hours total - **C-ID:** GEOL 101 - **Transfers to:** CSU, UC - **Offered:** not on the Fall 2026, Winter 2027, Spring 2027 schedules An introduction to the principles of geology with emphasis on Earth processes. This course focuses on the internal structure and origin of the Earth and the processes that change and shape it. The laboratory component focuses on the identification of rocks and minerals, topographic and geologic map exercises demonstrating the work of water, wind, ice and gravity and effects of tectonic activity. C-ID GEOL 101. ### ESCI 1220 — Historical Geology/Lab - **Units:** 4 - **Hours:** 3 hours lecture weekly, 3 hours lab weekly, 108 contact hours total - **C-ID:** GEOL 111 - **Transfers to:** CSU, UC - **Offered:** not on the Fall 2026, Winter 2027, Spring 2027 schedules An introduction to Earth’s history and the life it supports with a laboratory. Subjects include geologic dating, plate tectonics, stratigraphy, fossils, biological evolution, the planet’s origin and the processes that have influenced paleogeography during the past 4.6 billion years.C-ID GEOL 111.