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Widespread fossiliferous sedimentary geologic unit in California
The Sespe Formation is a widespread fossiliferous sedimentary geologic unit in southern and south central California in the United States. It is of nonmarine
Sespe_Formation
Valley in Ventura County, California, USA
5788768; -119.2581680 Sespe Gorge is a rugged section of the upper Sespe Creek in Ventura County, southern California. The formation is several miles downstream
Sespe_Gorge
Sedimentary basin located along the coast of southern California
Sespe and Vaqueros formations. Eruptions from one or more of volcanic centers locally and temporarily interrupted sedimentation. The Puente Formation
Los_Angeles_Basin
Sedimentary geologic unit of Upper Oligocene and Lower Miocene in California
the underlying Sespe Formation, because of its high porosity and the presence of an impermeable cap in the overlying Rincon Formation, it is the second-most
Vaqueros_Formation
Valley in Southern California
the Simi Valley quadrangle is the upper Cretaceous Chatsworth Formation. The Sespe Formation consists of alluvial fan and floodplain deposits of interbedded
Simi_Valley_(valley)
Tributary in California
The watershed includes several geologic formations, including the Tertiary Sespe Formation and Santiago Formation, and Holocene sedimentary and alluvial
Cañada_Gobernadora
Extinct genus of mammals
from the Duchesnean (middle Eocene) Simi Valley Landfill local fauna, Sespe Formation, California" (PDF). Paludicola. 7 (4): 158–169. Archived from the original
Batodonoides
Protected wilderness area in California, United States
The Sespe Wilderness is a 219,700-acre (88,900 ha) wilderness area in the eastern Topatopa Mountains and southern Sierra Pelona Mountains, within the
Sespe_Wilderness
Extinct genus of snakes
at least one species is known from the middle to late Eocene-aged Sespe Formation of California (B. affinis). Boavus was a small snake measuring between
Boavus
Eocene geologic unit in Southern California
contact with the Sespe Formation are rich locations for finding remnants of these sea-snails. Elsewhere near the top contact with the Sespe, the remnants
Coldwater_Sandstone
Geologic formation in California, United States
Valley Santa Clara River Valley — Rancho Camulos area Topatopa Mountains — Sespe gorge area Fort Tejon area of the San Emigdio Mountains and Tehachapi Mountains
Tejon_Formation
Southern California geological formation
northeast into the Ventura County backcountry, where Piru and Sespe creeks cross through the formation. It accounts for the highest peaks in the Santa Ynez range
Matilija_Sandstone
Geologic formation in California, United States
The Puente Formation is a geologic formation in California. It preserves fossils dating back to the middle to upper Miocene epoch of the Neogene period
Puente_Formation
Extinct genus of mammals
Stock in 1933, based on a well-preserved skull (CIT 1087) found in the Sespe Formation in California. Stock compared Amynodontopsis to the North American
Amynodontopsis
Ancient former river system
paleogeography, and paleotectonic implications of the mid-Cenozoic Sespe Formation, coastal southern California, USA", Tectonics, Sedimentary Basins,
California_River
Earthquake in California, United States
"Tectonic rotation of the Santa Ynez Range, California, recorded in the Sespe Formation". Geophysical Journal International. 102 (3): 739–745. Bibcode:1990GeoJI
1978_Santa_Barbara_earthquake
Extinct genus of mammals
new genus, Eubrontotherium. LACM/CIT 2143, a fossil palate from the Sespe Formation in California, was classified as Teleodus (Duchesneodus) by Stock in
Protitanops
Extinct genus of mammals
correlated with the Duchesnean Pearson Ranch Local Fauna, found in the Sespe Formation of Ventura County, California. Parvicornus was a browser and would
Parvicornus
gravel and silt of the Sespe Formation. Before the end of the Oligocene, sea levels rose again leaving behind the Vaqueros Formation and then the Miocene
Geology and geological history of California
Geology_and_geological_history_of_California
Extinct family of mammals
from the Duchesnean (middle Eocene) Simi Valley Landfill local fauna, Sespe Formation, California" (PDF). Paludicola. 7 (4): 158–169. Archived from the original
Geolabididae
National park in California, United States
South Point Formation, while the Cozy Dell Formation is present on Santa Rosa, along with the Sespe Formation. Middle Tertiary formations found on Santa
Channel_Islands_National_Park
Extinct genus of mammals
Stock also reported an Amynodon tooth, possibly A. advenus, from the Sespe Formation in California. David J. Golz and Jason A. Lillegraven reported additional
Amynodon
Flat Formation Permian Santa Rosa Island Formation Santa Susana Formation Paleogene Santiago Formation Paleogene Scripps Formation Paleogene Sespe Formation
List of fossiliferous stratigraphic units in California
List_of_fossiliferous_stratigraphic_units_in_California
Geologic formation in Orange and northwestern San Diego County, California
Formation is a geologic formation in Orange and northwestern San Diego County, California. The siltstones, mudstones and sandstones of the formation preserve
Santiago Formation, California
Santiago_Formation,_California
Oil field in Ventura County, California
field, oil is trapped in numerous thin layers of oil sands within the Sespe Formation, of Oligocene age. Oil is trapped updip where it encounters the impermeable
Santa_Clara_Avenue_Oil_Field
Extinct genus of mammals
also reached California; a fossil palate (LACM/CIT 2143) from the Sespe Formation may belong to either E. clarnoensis or Protitanops curryi, though it
Eubrontotherium
Geologic formation in Southern California, United States
The Llajas Formation is a non-marine to marine conglomerate geologic formation in Southern California. It is found in the Transverse Ranges geologic province
Llajas_Formation
from the Duchesnean (middle Eocene) Simi Valley landfill local fauna, Sespe Formation, California". Paludicola. 7 (3): 67–77. Louis de Bonis; Stephane Peigné;
2009_in_paleomammalogy
Pair of partially active oil fields in California
significant pools occur in the Rincon Formation at a depth of 2,600 feet (790 m), and in the Upper Sespe Formation at 3,700 feet (1,100 m) below ground
Ellwood_Oil_Field
California: Friars Formation Mission Valley Formation Pomerado Conglomerate Santiago Formation Scripps Formation Sespe Formation (Tapo Canyon, Brea Canyon
Uintan
Natural gas field in Santa Barbara County, California, United States
grassland. Below the Vaqueros is either the red sandstone and conglomerate Sespe Formation, which was found to contain pockets of gas, none of commercially producible
La_Goleta_Gas_Field
Oil field in Ventura County, California, United States
portion of the field in June 1953 by drilling into the Oligocene-age Sespe Formation, where they also found oil at the 11,500-foot (3,500 m) depth. This
West_Montalvo_Oil_Field
from the Duchesnean (middle Eocene) Simi Valley Landfill local fauna, Sespe Formation, California". Paludicola. 7 (4): 158–169. T.J. Meehan; Larry D. Martin
2010_in_paleomammalogy
series of fine, conglomerate sand and sandy siltstone underlying the Sespe Formation and outcropping by the end of what is now the mouth of Las Llajas Canyon
Las_Llajas_Canyon
North American faunal stage
formations preserving Duchesnean fossils include: California: Upper Pomerado Conglomerate Santiago Formation (Member C, "Bone Sands") Sespe Formation
Duchesnean
Eocene geologic formation in California
"Lithostratigraphy and Depositional Environments of the Vaqueros and Upper Sespe/Alegria Formations, Hondo Field, Santa Barbara Channel, California". SEPM Core Workshop
Cozy_Dell_Shale
mammals from the latest Uintan (middle Eocene) Strathern local fauna, Sespe Formation, California". Paludicola. 9 (2): 56–69. Susumu Tomiya (2013). "New
2013_in_paleomammalogy
Taxonomy of a fossil mammal genus
Duchesnean Sespe Formation in California, and in 1967, Philip R. Bjork named the species T. thyboi from the Duchesnean Slim Buttes Formation in South Dakota
Taxonomy_of_Megacerops
Oil field adjacent to Santa Paula, California, United States
pool, and the one first to be discovered, is in the Oligocene-age Sespe Formation, trapped in the huge anticline of which South Mountain is the surface
South_Mountain_Oil_Field
Oil field in Oxnard, California, United States
producing horizon is named the "McInnes" pool, and is in the Oligocene-age Sespe Formation. The Oxnard field contains a large quantity of tar sand, a type of
Oxnard_Oil_Field
Abandoned oil field in Santa Barbara, California
ground surface. Underneath the Vaqueros formation and separated by an unconformity is the Oligocene-age Sespe Formation; no oil has been found in or beneath
Mesa_Oil_Field
Extinct genus of mammals
californicus from the Sespe Formation in California in 1935, and Philip R. Bjork named T. thyboi from the Slim Buttes Formation in South Dakota in 1967
Duchesneodus
Sedimentary geologic unit in Santa Barbara County, California
"Lithostratigraphy and Depositional Environments of the Vaqueros and Upper Sespe/Alegria Formations, Hondo Field, Santa Barbara Channel, California." SEPM Core Workshop
Rincon_Formation
City in California, United States
are the Fillmore fish hatchery and the Sespe Creek and Sespe Wilderness, home to the California condor Sespe sanctuary. The City of Fillmore is an established
Fillmore,_California
Geologic formation in San Diego County
Valley Formation is a marine sandstone geologic formation in the Mission Valley region of southwestern San Diego County, California. The formation's sandstone
Mission_Valley_Formation
Extinct genus of mammals
Chalk Canyon Formation, Arizona Diligencia, Sespe & Tick Canyon Formations, California Arikaree Formation, North Dakota John Day Formation, Oregon Delaho
Merychyus
Non-profit organization focusing on the education of women and girls
they can engage students in Java language using TKP courseware. Rancho Sespe is a small village of agricultural families living near the town of Fillmore
Mona_Foundation
National park in California, United States
(volcanic-derived mud flows) in the Pliocene which became the Tuscan Formation. This formation is not exposed anywhere in the national park but it is just below
Lassen_Volcanic_National_Park
through the granodiorite basement rock and sediments comprising the Carmelo Formation were deposited. The Carmelo consists of pebble to cobble conglomerate
Geological history of Point Lobos
Geological_history_of_Point_Lobos
Extinct genus of carnivores
American Museum Novitates 198:1–10. C. Stock (1934) "New creodonta from the Sespe upper Eocene, California." Proceedings of the National Academy of Sciences
Miacis
Engineer and builder of the Los Angeles Aqueduct (1855–1935)
again in 1885 and worked for the Sespe Land and Water Company. As part of his compensation, he was granted 20 acres on Sespe Creek. In 1886, he returned to
William_Mulholland
Section of the Colorado River in Arizona–California
Shasta North Fork Pine Creek San Gabriel San Jacinto San Rafael Sanhedrin Sespe Siskiyou Snow Mountain South Fork Eel River South Sierra South Warner Thousand
Topock_Gorge
The park is divided by rock formations into eastern and western areas, connected by hiking trails. The rock formations provide for extensive views that
National_parks_in_California
National park in California, United States
is protected as wilderness. The national park is divided by the rock formations into East and West Divisions, connected only by foot trails. The east
Pinnacles_National_Park
Mountain range of the Transverse Ranges in California, United States
the Topatopa Mountains beyond to the east, which terminates abruptly at Sespe Creek. The climate of the range is Mediterranean with most of the precipitation
Santa_Ynez_Mountains
Mesozoic–Cenozoic plateau in North America
Winn, Carmen; Crossey, Laura (15 October 2020). "Evaluating the Shinumo-Sespe drainage connection: Arguments against the "old" (70–17 Ma) Grand Canyon
Nevadaplano
National monument in California, United States
Eastern California. The monument protects Devils Postpile, an unusual rock formation of columnar basalt, "all closely and perfectly fitted together like a
Devils Postpile National Monument
Devils_Postpile_National_Monument
Extinct genus of metatherian mammals
hdl:11336/94590. ISSN 0094-8373. S2CID 46796692. Simpson, 1928. Stock, Chester. "Sespe Eocene Didelphids." Proceedings of the National Academy of Sciences, pp
Herpetotherium
Canyon in Ventura County, California
(1988). Mountain Biking the Coast Range, Guide 4: Ventura County & the Sespe. Fine Edge Productions. Page 8. ISBN 9780938665038. Blackwell, Laird R.
Cozy_Dell_Canyon
City in California, United States
east are drained by Sespe Creek, which empties into the Santa Clara River at Fillmore. In 1991, 31.5 miles of the 55-mile-long Sespe Creek was given federal
Ojai,_California
United States historic place
rock formation in the foothills of the Scodie Mountains portion of the Southern Sierra Nevada Mountain Range in the North Mojave Desert. The formation overlooks
Robbers Roost (Kern County, California)
Robbers_Roost_(Kern_County,_California)
National park in California, United States
of their people, and loss of their lands and resources. The War and formation of the Mariposa Battalion was partially the result of a single incident
Yosemite_National_Park
State park in California, United States
California which features scenic desert cliffs, buttes and spectacular rock formations. The park consists of approximately 27,000 acres (110 km2) within the
Red Rock Canyon State Park (California)
Red_Rock_Canyon_State_Park_(California)
Rock formation in California, United States
Castle Crags is a dramatic and well-known rock formation in Northern California. Elevations range from 2,000 feet (610 m) along the Sacramento River near
Castle_Crags
Seal of Ventura Incumbent Dr. Jeannette Sanchez-Palacios since December 17, 2024 Term length 2 years Formation 1866 First holder Walter Scott Chaffee
List of mayors of Ventura, California
List_of_mayors_of_Ventura,_California
National park in California, United States
Woof Rock, the Maverick Boulder formation, Pictograph Boulder, Shindig, Lonely Stones Area #3, and the Shipwreck formation, Indian Wave Boulders (except
Joshua_Tree_National_Park
Historic park in Sacramento, California
association with the Donner Party, the California gold rush, and the formation of the city of Sacramento, surrounding the fort. It is notable for its
Sutter's_Fort
National park in California and Nevada, United States
the two underwater precipices, starting the formation of opposing continental shelves. Three formations developed from sediment that accumulated on the
Death_Valley_National_Park
Mountain range in California, United States
natural maze within the badlands. Uniquely faulted and folded geologic formations are the result of activity on the local sections of the San Andreas Fault
Mecca_Hills
Species of fish
established in the Owens River sanctuary. This species is also present in Sespe Creek near the outlet of the Fillmore Hatchery and Piru Creek above Lake
Owens_sucker
U.S. National Forest designated in 1976
Area makes it a popular recreation destination. The volcanic and granite formations in the wilderness exist alongside heavy cattle grazing. Whitewater rafting
Stanislaus_National_Forest
Wilderness area in California, United States
uplifted to form the Marble Mountains. These sediments – the Latham Shale Formation – are between 50 ft (15 m) and 75 ft (23 m) thick. Deeper sediments were
Trilobite_Wilderness
Caves in California, United States
surrounding sedimentary limestone. Stalactites, stalagmites, and other cave formations were formed from calcium carbonate left by dripping mineral water. Numerous
Mitchell_Caverns
Group of islands off the coast of California, United States
hill in its eastern part. The Great West Arch, or Aulon Arch, is a rock formation in the west of the island, and Indian Head is in the south. The Drunk
Farallon_Islands
Public school in Wasco, California, United States
Wildwood, Semitropic and Wasco elementary school districts approved the formation of a high school, to coincide with the new addition of the Wasco Union
Wasco_Union_High_School
City in California, United States
Clara River separates Oxnard and Ventura. Tributaries to this river include Sespe Creek, Piru Creek, and Castaic Creek. Oxnard is on a tectonically active
Oxnard,_California
National forest in California, United States
118.5044°W) The Needles Lookout trail, which takes you up to the rock formation, is 2.5 miles long. The Needles Fire Lookout Tower, which sat on top of
Sequoia_National_Forest
State park in California, United States
access. natural history about the park's diverse: geology and granite rock formations; natural flora, forests, and wildflowers; and animals including birdwatching
South_Yuba_River_State_Park
State park in Los Angeles County, California, United States
Canyon on the Placerita Fault and contains sandstone and metamorphic formations, and seasonal streams. Chaparral and Coast Live Oak woodland plant communities
Placerita_Canyon_State_Park
National park in California, United States
essentially limestone that was metamorphosed by the heat and pressure of the formation and uplift of the Sierra Nevada Batholith. The batholith's rapid uplift
Sequoia_National_Park
State of California property in Sonoma County
mammals are a blueschist rock formation about one mile (1.6 km) south of the Russian River. There is found a sea stack formation with prominent rubbing marks
Sonoma_Coast_State_Park
National park in California, United States
foxtail pine and stunted whitebark pine. Trees often create krummholtz formations, or a stunted, deformed growth pattern characterized by branches closely
Kings_Canyon_National_Park
State park in Los Angeles County, California, US
Topanga Canyon. Geologically, the park has many sedimentary sandstone rock formations, marine fossils, exposed faults, and volcanic intrusions. The primary
Topanga_State_Park
Department of the state government of California
Commission was formed after the California Legislature called for the formation of a multidisciplinary advisory council to conduct an independent assessment
California_State_Parks
National monument in California, United States
Monument is geologically significant because of its wide variety of volcanic formations, including lava tubes, fumaroles, cinder cones, spatter cones, pit craters
Lava_Beds_National_Monument
Protected wilderness area in California, United States
prepared spelunkers. They all feature stalactites and other flowstone formations, and are accessible mostly by vertical drops. Due to the hidden nature
Marble_Mountain_Wilderness
Grassland plain in central California
soil that has been deposited by rivers or flowing water. The Paso Robles formation is a Pleistocene-aged alluvium deposit that reaches up to 3,000 ft (900 m)
Carrizo_Plain
Landform in San Bernardino County, Arizona
feet (1,259 m). The western portion of the mountain range has pale green formations, differing from the eastern, steeply carved and striking brick-red volcanics
Whipple_Mountains
State park of California, U.S.
recreational activities within its 5,092-acre (2,061 ha) property. The rock formations of Trione-Annadel have played a central role in its history: its volcanic
Trione-Annadel_State_Park
American contemporary artist (born 1956)
The Museum of Contemporary Art. Retrieved September 3, 2026. "Into the Sespe Wilderness". SFMOMA. Retrieved September 3, 2026. "FAMSF". FAMSF. Retrieved
Russell_Crotty
Natural reserve in California, United States
California State Legislature to preserve the natural limestone "tufa tower" formations at Mono Lake. California State Park Rangers were charged with conducting
Mono Lake Tufa State Natural Reserve
Mono_Lake_Tufa_State_Natural_Reserve
California state park near Los Gatos
sprinkled with unusual rock formations that are a popular rock climbing area. The park is named after a sandstone formation called Castle Rock. The forest
Castle Rock State Park (California)
Castle_Rock_State_Park_(California)
Shasta North Fork Pine Creek San Gabriel San Jacinto San Rafael Sanhedrin Sespe Siskiyou Snow Mountain South Fork Eel River South Sierra South Warner Thousand
List of National Historic Landmarks in California
List_of_National_Historic_Landmarks_in_California
Protected wilderness area in California, United States
for noted scout and explorer Kit Carson) and the distinctive granite formation called "The Iceberg" on the southern boundary near Clark Fork Road. Historical
Carson–Iceberg_Wilderness
Historic park in California, United States
Arden Edwards in 1928. The chalet-style structure was built over the rock formation of Piute Butte in the Mojave Desert. The unusual folk art structure, originally
Antelope Valley Indian Museum State Historic Park
Antelope_Valley_Indian_Museum_State_Historic_Park
State park in Monterey County, California
(SOSUS) facilities, and the only one remaining on the West Coast. The land formation later known as Point Sur is visible at sea for 10 miles (16 km) and was
Point_Sur_State_Historic_Park
State park in California, United States
the channel complex has incised silty slope mudstones from the Monterey Formation of the Miocene epoch. Currently, there has been no lateral overbank deposits
San_Clemente_State_Beach
United States National Monument in California
moderately acidic. It has developed from a mélange in the Franciscan Formation. More open areas of the park have shallow gravelly loam of the Barnabe
Muir_Woods_National_Monument
Marine protected area in California
South La Jolla is known as “the jewel” of San Diego.[tone] Sandstone formations flank a coastal ecosystem teeming with life. Many local species can also
South La Jolla State Marine Conservation Area
South_La_Jolla_State_Marine_Conservation_Area
World War II internment camp in California, US
from June to December 1942 convinced the War Department to authorize the formation of the 442nd Regimental Combat Team (RCT) on February 1, 1943. On August
Manzanar
travel, tourism, insurance
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