View In:
ArcGIS JavaScript
ArcGIS Online map viewer
ArcGIS Earth
ArcMap
ArcGIS Explorer
View Footprint In:
ArcGIS Online map viewer
Service Description:
Map Name: Layers
Legend
All Layers and Tables
Dynamic Legend
Dynamic All Layers
Layers:
Description:
Copyright Text:
Spatial Reference:
102100
(3857)
Single Fused Map Cache: false
Initial Extent:
XMin: -1.3673968192338457E7
YMin: 4556708.165054263
XMax: -1.3640858769182833E7
YMax: 4576377.700413265
Spatial Reference:
102100
(3857)
Full Extent:
XMin: -1.3668955866114158E7
YMin: 4552674.363381398
XMax: -1.3645871095407128E7
YMax: 4575248.970078413
Spatial Reference:
102100
(3857)
Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title:
Author:
Comments: The map area offshore of Bolinas, California, which is referred to herein as the “Offshore of Bolinas” map area, is located on the Pacific Coast of Marin County, 10 km (6 mi) north of the Golden Gate. The town of Bolinas is the largest population center along this section of coast with a population of approximately 1,600 people. Bolinas is named after a local indigenous tribe. Bolinas is situated at the end of a southeast trending terrain on the western side of the San Andreas Fault that also protects a natural harbor. The harbor lies in Bolinas Lagoon, which is separated from Bolinas Bay by a spit. The harbor hosts two marinas, a boat launch, and two fishing ports. There is little recreational boat activity in the harbor. The coastal lands within the Offshore of Bolinas map area lie entirely within the Point Reyes National Seashore, which limits development and allows existing ranching and farming to continue.
The map area lies offshore of the northern-trending Coast Ranges that run roughly parallel to the San Andreas Fault Zone (SAFZ) (California Geological Survey, 2002). The western margin of North America is the only continental margin in the world delineated largely by transform faults such as the San Andreas. The Coast Ranges lie to the east of the San Andreas Fault. The coastal geomorphology is controlled by Late Pleistocene to Holocene slip along the fault. Bolinas Bay and Lagoon have formed where a regional depression along the fault zone intersects the coast. An eastward bend in the San Andreas to the south, combined with right-lateral movement, has caused regional extension and the formation of a sediment basin on the continental shelf in and southeast of, Bolinas Bay.
With the exception of the area around Bolinas Bay, the coast in the map area consists of high coastal bluffs and vertical sea cliffs. The uplifted region upon which the town of Bolinas is situated is part of a larger uplifted area that offshore produces exposed bedrock habitat. Uplift in this area results in relatively shallow water depths within State waters and little accommodation space for sediment accumulation. The sediment observed in the area is located in the extensional basin area southeast of Bolinas and on the shelf in state waters offshore of uplifted coastal and shelf areas where depths exceed 40 m. Wave energy keeps the uplifted bedrock areas clear of sediment, and sediment in the outer shelf is rippled indicating some mobility.
Subject: CSMP is a cooperative program to create coastal/marine geologic and habitat base map information for all of California's State Waters.
Category:
Keywords: California, ocean, mapping, seafloor, geology, habitat
AntialiasingMode: None
TextAntialiasingMode: Force
Supports Dynamic Layers: true
MaxRecordCount: 1000
MaxImageHeight: 8192
MaxImageWidth: 8192
Supported Query Formats: JSON, AMF, geoJSON
Min Scale: 0
Max Scale: 0
Supports Datum Transformation: true
Child Resources:
Info
Dynamic Layer
Supported Operations:
Export Map
Identify
QueryDomains
Find
Return Updates
Generate KML