Galápagos and Easter : (Registro nro. 12958)

Detalles MARC
000 -LEADER
fixed length control field	02183nab a22002417a 4500
003 - CONTROL NUMBER IDENTIFIER
control field	EC-PaCDF
005 - DATE AND TIME OF LATEST TRANSACTION
control field	20201003113749.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field	170127t20142014xxu\|\|\|\|\| \|\|\|\| 00\| 0 eng d
040 ## - CATALOGING SOURCE
Original cataloging agency	EC-PaCDF
Language of cataloging	spa
Transcribing agency	EC-PaCDF
041 ## - LANGUAGE CODE
Language code of text/sound track or separate title	eng
082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER
Edition number	22
Classification number	552.2
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name	Harpp, Karen S.
Relator term	autor
245 10 - TITLE STATEMENT
Title	Galápagos and Easter :
Remainder of title	A Tale of Two Hotspots /
Statement of responsibility, etc.	Karen S. Harpp, Paul S. Hall and Matthew G. Jackson.
300 ## - PHYSICAL DESCRIPTION
Extent	: 27-38 p.
520 0# - SUMMARY, ETC.
Summary, etc.	Spatial asymmetry in the isotopic composition of volcanic rocks has been identified at several Pacific hotspots, including Hawai'i, the Marquesas, Samoa, the Societies, and the Galápagos. At each hotspot, the volcanoes are arranged in two sub-parallel chains that also define distinct fields in isotopic space. Here we present interpreta-tions of data from two additional ocean island systems that exhibit spatial isotopic asymmetry: the Galápagos and Easter hotspots. Both systems display geochemical asymmetry despite being near-ridge hotspots, suggest-ing that compositional zonation in plumes originates at depths greater than the plumbing systems supplying mid-ocean ridges. Furthermore, the correspondence of the compositional boundaries of the Galápagos and Easter hotspots with those of the Large Low Shear Velocity Province (LLSVP) is consistent with the assertion that spatial patterns of isotopic enrichment at hotspots may reflect the distribution of compositional heteroge-neity within the thermal boundary layer at the base of the mantle that gives rise to the plumes. At the Galápagos hotspot, which is located along the northern side of the LLSVP, the southern side of the chain exhibits geo-chemical enrichment, whereas at the Easter hotspot, located along the southern side of the LLSVP, it is the northern side of the chain that is enriched. Consequently, spatial variations in the geochemistry of hotspot lavas may provide a method for mapping the geochemical structure of the lower mantle.
546 ## - LANGUAGE NOTE
Language note	Inglés
653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term	Easter
653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term	Pascua de Resurección
653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term	Galápagos
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name	Hall, Paul S.
Relator term	autor
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name	Jackson, Matthew G.
Relator term	autor
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme	Dewey Decimal Classification
Koha item type	Artículo

Existencias
Withdrawn status	Source of classification or shelving scheme	Damaged status	Not for loan	Collection code	Home library	Current library	Shelving location	Date acquired	Total Checkouts	Full call number	Barcode	Date last seen	Price effective from	Koha item type
	Dewey Decimal Classification			Galápagos	Corley Smith Library	Corley Smith Library	Artículos	27/01/2017		552.2 HAR 2014	2020-0719	27/01/2017	27/01/2017	Artículo
	Dewey Decimal Classification			Galápagos	Corley Smith Library	Corley Smith Library	Colección PDF	27/01/2017		552.2 HAR 2014	2021-1329	27/01/2017	27/01/2017	Documento electrónico