Guide Seamount

{{Short description|Underwater volcano near California}}

{{Infobox Seamount

| name = Guide Seamount

| depth = {{convert|1682|m|ft|0|abbr=on}}

| height = {{convert|1440|m|ft|0|abbr=on}}

| pushpin_map = California

| map_caption = Bathymetry of Guide Seamount

| summit_area = {{convert|130|km2|sqmi|0|abbr=on}}

| location =

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| coordinates = {{Coord|37|00.60|N|123|21.00|W|type:mountain|display=inline, title}}{{cite web|url=http://earthref.org/databases/SC/|title=Seamount Catalog|work=Seamounts database|publisher=EarthRef, a National Science Foundation project|accessdate=2009-04-09}}

| country = Central California, United States

| type = Seamount (Underwater volcano)

| volcanic_group =

| age = 16.6±0.5 million years old

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Guide Seamount is a seamount in the eastern Pacific Ocean, about 16.6±0.5 million years old. It is similar in shape and orientation to the nearby Davidson, Pioneer, Rodriguez, and Gumdrop seamounts. It is named for the United States Coast and Geodetic Survey survey ship USC&GS Guide.

Guide Seamount is constructed of four nearly parallel volcanic ridges, separated by sediment-filled throughs. These are aligned parallel to magnetic anomalies in the underlying oceanic crust. It is very similar in shape and structure to the nearby Davidson Seamount, except that it is smaller, at approximately {{convert|16.5|km|mi|0|abbr=on}} by {{convert|5|km|mi|0|abbr=on}}. It rises about {{convert|1440|m|ft|0|abbr=on}} above the seafloor and sits at depth of {{convert|1682|m|ft|0|abbr=on}}.{{cite web|url=http://www.mbari.org/data/mapping/seamounts/guide_smt.htm|title=Mapping Program: Guide Seamount|date=February 6, 2009|publisher=MBARI|accessdate=8 December 2009|url-status=dead|archiveurl=https://web.archive.org/web/20110516180802/http://www.mbari.org/data/mapping/seamounts/guide_smt.htm|archivedate=16 May 2011}}

The lavas from Guide are mostly alkalic basalt, hawaiite, mugearite with some pyroclastic flows near the top of the summit.