Query by Location Names

Quick Search for Lavaflows, Formations, or Rockseries

Alphabetical List of Locations

[1-9]A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Please select location(s)
 
100DS SITE
1241-TINDAR;ICELAND
1278-TINDAR;ICELAND
1313-TINDAR;ICELAND
139.2° GUYOT;LOUISVILLE SEAMOUNT CHAIN
148.8° GUYOT;LOUISVILLE SEAMOUNT CHAIN
155.9°W (RUMYANTSEV) GUYOT;LOUISVILLE SEAMOUNT CHAIN
157.6° GUYOT;LOUISVILLE SEAMOUNT CHAIN
157.7°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
158.5°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
159.8°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
160.7°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
161.5°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
162°S GUYOT;LOUISVILLE SEAMOUNT CHAIN
163.6°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
165.4°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
165.7°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
166.1°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
166.6°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
167.3°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
167.4°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
168.3°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
168.6°W GUYOT;LOUISVILLE SEAMOUNT CHAIN
27.6°S GUYOT;LOUISVILLE
29.6°S GUYOT;LOUISVILLE SEAMOUNT CHAIN
30.5°;KERMADEC ARC
34.5°;KERMADEC ARC
35.8°S GUYOT;LOUISVILLE
5TH BROTHER ISLAND;RED SEA RIFT
6K1438
6K1545
6TH BROTHER ISLAND;RED SEA RIFT
77° GRABEN;KERGUELEN PLATEAU
94DS SITE
AAG;KAMCHATKA
ABAGA VOLCANIC FIELD;CHINA
ABEJERA ALTA;CANARY ISLANDS
ABEJERA BAJA;CANARY ISLANDS
ABERDEEN LAKE SUPRACRUSTAL BELT
ABIDA CENTRAL VOLCANO;EAST AFRICAN RIFT
ABITIBI DIKE SWARM
ABITIBI GREENSTONE BELT;CANADA
ABRA GRANADA VOLCANIC COMPLEX;ARGENTINA
ABRUZZO
ABSAROKA-GALLATIN VOLCANIC PROVINCE - ELECTRIC PEAK;MONTANA
ABSAROKA-GALLATIN VOLCANIC PROVINCE - EMIGRANT PEAK;MONTANA
ABSAROKA-GALLATIN VOLCANIC PROVINCE - FRIDLEY PEAK;MONTANA
ABSAROKA-GALLATIN VOLCANIC PROVINCE - SUNLIGHT VOLCANO;MONTANA
ABSAROKA-GALLATIN VOLCANIC PROVINCE;MONTANA
ABU TARBUSH;JORDAN
ABU VOLCANO GROUP - IRAO;HONSHU ARC
ABU VOLCANO GROUP;HONSHU ARC
ACADEMIAN BERG; HAWAIIAN-EMPEROR CHAIN
ACADEMY NAUK;KAMCHATKA
ACASTA GNEISS COMPLEX;CANADA
ACATENANGO;GUATEMALA
ACATLAN VOLCANIC FIELD;MEXICO
ACHECALANE;CHILE
ACHERNAR GUYOT;LOUISVILLE SEAMOUNT CHAIN
ACHILLEION;AEGEAN ARC
ACHIYAMA;IZU-BONIN ARC
ACHTANG;KAMCHATKA
ACIGÖL;ANATOLIA
ACOCULCO CALDERA;MEXICO
ACROTIRI:AEGEAN ARC
AD DAWADIMI SHIELD TERRANE;SAUDI ARABIA
ADACHI;HONSHU ARC
ADAGDAK;ALEUTIAN ARC
ADAK CANYON;ALEUTIAN ARC
ADAK;ALEUTIAN ARC
ADAM;FIEBERLING-GUADALUPE SEAMOUNT TRAIL
ADAMAWA (ADAMAOUA) PLATEAU;CAMEROON LINE
ADAMKIRAN;ANATOLIA
ADAMS;PITCAIRN-GAMBIER CHAIN
ADATARA;HONSHU ARC
ADEN REGION;YEMEN
ADEN VOLCANO;YEMEN
ADIGE VALLEY;ITALY
ADIRONDACK MASSIF;NEW YORK
ADOLA BELT;ETHIOPIA
ADONARA;SUNDA ARC
ADRAR N^ADDJER VOLCANIC FIELD;ALGERIA
ADRIA DOMAIN
ADRIATIC FORELAND;ITALY
AEGEAN ARC
AEGEAN BACK ARC
AEGINA;AEGEAN ARC
AEOLIAN ARC
AEZOP-YAMALIN VOLCANIC FIELD;SIBERIA
AFAR DEPRESSION;EAST AFRICAN RIFT
AFDERA;EAST AFRICAN RIFT
AFGHANISTAN
AFIF SHIELD TERRANE;SAUDI ARABIA
AFIF TERRANE;SAUDI ARABIA
AFYON;ANATOLIA
AFYON-SUHUT-SANDIKLI VOLCANIC FIELD;ANATOLIA
AGARTETO;CARPATHIAN ARC
AGATE MOUNTAIN;NAMIBIA
AGATTU (NEAR ISLANDS);ALEUTIAN ARC
AGIOS EFSTRATIOS (HAGIOS EUSTRATIOS);AEGEAN ARC
AGRIGAN;MARIANA ARC
AGROMOSA;HONDURAS
AGUA DE PAO;AZORES
AGUA DE TORRES;ARGENTINA
AGUA;GUATEMALA
AGUAJITO CALDERA;MEXICO
AGUAS BLANCAS;CHILE
AGUAS MUERTAS VOLCANIC COMPLEX;MEXICO
AGUAS ZARCAS BUENOS AIRES;COSTA RICA
AGUILERA;CHILE
AGUILIRI;ARGENTINA
AGULHAS RIDGE
AGUNG;SUNDA ARC
AGUNI-JIMA;RYUKYU ARC
AGVORIK;CAUCASUS
AHU VOLCANIC FIELD
AHUACHAPAN;EL SALVADOR
AHUROA;NEW ZEALAND
AHYI;MARIANA ARC
AIGUILLES-ROUGES CRYSTALLINE MASSIF;SWITZERLAND
AILERON PROVINCE
AILLIK DOMAIN;LABRADOR
AIMAGA;BISMARCK ARC
AIOI VOLCANO GROUP;HONSHU ARC
AIRA;RYUKYU ARC
AITUTAKI;AUSTRAL-COOK ISLANDS
AJARAYAMA;HONSHU ARC
AJNACSKÖ;CARPATHIAN ARC
AJOYA;CHILE
AJOYA-CHOQUELIMPIE;CHILE
AJUSCO;MEXICO
AKADAKI;HONSHU ARC
AKADEMII NAUK RISE;OKHOTSK-CHUKOTKA ARC
AKAGI;HONSHU ARC
AKAI;RYUKYU ARC
AKAIGAWA;HONSHU ARC
AKAKUBO;IZU-BONIN ARC
AKAN;KURILE ARC
AKANVAARA INTRUSION
AKAROA;NEW ZEALAND
AKASAKA;IZU-BONIN ARC
AKASHIMA;HONSHU ARC
AKAYASU;HONSHU ARC
AKAZAKINO-MINE;IZU-BONIN ARC
AKERSHUS GRABEN;OSLO RIFT
AKHALKALAK VOLCANIC HIGHLAND;CAUCASUS
AKITA-KOMAGATAKE VOLCANIC GROUP;HONSHU ARC
AKITA-YAKEYAMA VOLCANIC GROUP;HONSHU ARC
AKNOTSASAR;CAUCASUS
AKUKUBO;IZU-BONIN ARC
AKUSEKI-JIMA;RYUKYU ARC
AKUTAN;ALEUTIAN ARC
AL AJAL AREA;OMAN RIFT
AL GHAB VOLCANIC GROUP;SYRIA
AL HAZM;SAUDI ARABIA
AL MANSOUR;BETIC-RIF OROGENIC BELT
AL WAHBAH CRATER;SAUDI ARABIA
ALADAG;ANATOLIA
ALAGOGSHAK;ALEUTIAN ARC
ALAID;KURILE ARC
ALAMAGAN;MARIANA ARC
ALAMO VOLCANIC FIELD;MEXICO
ALAOTRA DISTRICT;MADAGASCAR
ALAOTRA-BEFORONA MAFIC GNEISS AND SCHIST BELT;MADAGASCAR
ALARCON RISE;GULF OF CALIFORNIA
ALARCON SEAMOUNT;GULF OF CALIFORNIA
ALASKA
ALASKA PENINSULA
ALAYTA;EAST AFRICAN RIFT
ALBAN HILLS (COLLI ALBANI);ITALY
ALBAN HILLS;ITALY
ALBERT PARK;NEW ZEALAND
ALBERTA
ALBORAN DOMAIN (INTERNAL RIF);MOROCCO
ALBORAN ISLAND;SPAIN
ALBORAN RIDGE
ALBORAN SEA BASIN
ALBORZ MOUNTAINS;IRAN
ALBUQUERQUE BASIN
ALBUQUERQUE VOLCANOES;NEW MEXICO
ALCATRAZ;WAKE SEAMOUNT GROUP
ALCEDO;GALAPAGOS ISLANDS
ALCHICHICA MAAR;MEXICO
ALCIONE;AEOLIAN ARC
ALDAN SHIELD - ARCHEAN
ALDAN-STANOVOI BLOCK;SIBERIA
ALDERMAN TROUGH;HAVRE TROUGH
ALE BAGU (DALLAFILLA)/AFDREA;EAST AFRICAN RIFT
ALE BAGU (DALLAFILLA);EAST AFRICAN RIFT
ALEKSANDROVSKII ARCH;SIBERIA
ALEPPO PLATEAU;SYRIA
ALEUTIAN ABYSSAL PLAIN
ALEUTIAN ARC
ALEUTIAN BACK ARC
ALEUTIAN FORE-ARC
ALEXA BANK;SAMOAN ISLANDS
ALEXANDER ISLAND;SCOTIA ARC
ALEXANDER SELKIRK (MAS AFUERA);JUAN FERNANDEZ ISLANDS
ALEXANDER TERRANE
ALEXANDRA FIELD;NEW ZEALAND
ALGERIA
ALI MELA ALE;EAST AFRICAN RIFT
ALICUDI;ITALY
ALID;EAST AFRICAN RIFT
ALIGATOR;LUZON
ALISITOS ARC
ALJOJUCA;MEXICO
ALJORRA;SPAIN
ALLEGHENY;NEW ENGLAND SEAMOUNT CHAIN
ALLIGATOR LAKE VOLCANIC COMPLEX;YUKON TERRITORY
ALLISON GUYOT;MID-PACIFIC MOUNTAINS
ALMAGRO;ARGENTINA
ALMAS SANTAS;ECUADOR
ALMATY;KAZAKHSTAN
ALNEJ;KAMCHATKA
ALOFAU;SAMOAN ISLANDS
ALOFI;SAMOAN ISLANDS
ALONA BAY;BANDA ARC
ALONA BAY;KEWEENAWAN
ALOR;BANDA ARC
ALPHA RIDGE;ARCTIC
ALPHA;JUAN FERNANDEZ RIDGE
ALPINE;TEXAS
ALPS_SARDINIA_CORSICA
ALPUJARRIDE COMPLEX;SPAIN
ALTAI MOUNTAINS;MONGOLIA
ALTAI-SAYAN RIFT;MONGOLIA
ALTAR;ECUADOR
ALTIPLANO-PUNA VOLCANIC COMPLEX;ARGENTINA
ALTIPLANO-PUNA VOLCANIC COMPLEX;BOLIVIA
ALTIPLANO-PUNA VOLCANIC COMPLEX;CHILE
ALTO AMPURDAN VOLCANIC REGION;SPAIN
ALTO LUCERO;MEXICO
ALTO MOXOTO TERRANE;BRAZIL
ALTO PAJEU DOMAIN;BORBOREMA PROVINCE
ALTO PAJEU DOMAIN;BRAZIL
ALTO PARAGUAY IGNEOUS PROVINCE;PARAGUAY
ALTO PARANAIBA IGNEOUS PROVINCE;BRAZIL
ALU DALAFFILA;EAST AFRICAN RIFT
ALUCHIN GROUP - ALPHA VOLCANO;OKHOTSK-CHUKOTKA ARC
ALUCHIN GROUP - BETA VOLCANO;OKHOTSK-CHUKOTKA ARC
ALUCHIN GROUP - GAMMA VOLCANO;OKHOTSK-CHUKOTKA ARC
ALUCHIN GROUP;OKHOTSK-CHUKOTKA ARC
ALUMBRERA;ARGENTINA
ALUTO;EAST AFRICAN RIFT
ALXA BLOCK;MONGOLIA
ALXA TECTONIC BELT;CHINA
ALXA TECTONIC BELT;MONGOLIA
AMAGI;IZU-BONIN ARC
AMAHUITZ;MEXICO
AMAK;ALEUTIAN ARC
AMAKUSA;RYUKYU ARC
AMAMBAY IGNEOUS PROVINCE;PARAGUAY
AMAMI SANKAKU BASIN
AMAMI-OSHIMA ISLANDS;RYUKYU ARC
AMANAY;CANARY ISLANDS
AMANINA;KAMCHATKA ARC
AMATIGNAK;ALEUTIAN ARC
AMATITLAN;GUATEMALA
AMATLAN DE CANAS VOLCANIC FIELD;MEXICO
AMAZCALA CALDERA;MEXICO
AMAZONIAN CRATON
AMBA;SIKHOTE-ALIN-SAKHALIN ARC
AMBAE;NEW HEBRIDES ARC
AMBANG;SULAWESI
AMBATO DISTRICT;MADAGASCAR
AMBATOLAMPY-AMBATOMARINA GNEISS BELT;MADAGASCAR
AMBATOMASINA;MADAGASCAR
AMBELAU;BANDA ARC
AMBELOS;AEGEAN ARC
AMBON;BANDA ARC
AMBOY CRATER;CALIFORNIA
AMBOY VENT;CALIFORNIA
AMBRYM (=AMBRIM);NEW HEBRIDES ARC
AMBRYM;VANUATU ARCHIPELAGO
AMCHITKA;ALEUTIAN ARC
AMEALCO CALDERA;MEXICO
AMEMASU;HONSHU ARC
AMGUEMA-KANCHALAN VOLCANIC FIELD;OKHOTSK-CHUKOTKA ARC
AMIRANISGORA (TAVSHAN-TAPA);CAUCASUS
AMITSOQ COMPLEX
AMMASSALIK INTRUSIVE COMPLEX;NAGSSUGTOQIDIAN OROGEN BELT
AMORONG;LUZON ARC
AMPANG;MID-AFRICAN RIFT SYSTEM
AMPARAFARAVOLA;MADAGASCAR
AMPASINDAVA PENINSULA;MADAGASCAR
AMPATO;PERU
AMPERE;FOUNDATION SEAMOUNT CHAIN
AMPERE;TORE-MADEIRA RISE
AMPIRO;LUZON ARC
AMRAN BLOCK;ISRAEL
AMSAGA AREA;WEST AFRICA
AMSTERDAM ISLAND;INDIAN OCEAN
AMUR SUTURE BELT
ANABAR BLOCK;SIBERIA
ANABAR SHIELD
ANADYR SECTOR;OKHOTSK-CHUKOTKA ARC
ANAFI;AEGEAN ARC
ANAHEF VOLCANIC FIELD;ALGERIA
ANAHIM VOLCANIC BELT;BRITISH COLUMBIA
ANAHIM VOLCANIC BELT-ILGACHUZ RANGE;BRITISH COLUMBIA
ANAHIM VOLCANIC BELT-ITCHA VOLCANIC COMPLEX;BRITISH COLUMBIA
ANAHIM VOLCANIC BELT-NAZCO;BRITISH COLUMBIA
ANAHIM VOLCANIC BELT-RAINBOW RANGE;BRITISH COLUMBIA
ANAHIM VOLCANIC BELT-WELLS GRAY-CLEARWATER;BRITISH COLUMBIA
ANAMBAS ISLANDS;SUNDA ARC
ANANOKUBO;IZU-BONIN ARC
ANANOYAMA;IZU-BONIN ARC
ANANTAPUR DISTRICT;INDIA
ANANTAPUR-KUNIGAL DIKE SWARM;INDIA
ANANTO;PERU
ANATAHAN;MARIANA ARC
ANATOLIA-IRAN BELT
ANATOM (ANEITYUM);NEW HEBRIDES ARC
ANAUNSKY DOL;KAMCHATKA ARC
ANCESTRAL CASCADES
ANCESTRAL MOUNT SPURR;ALEUTIAN ARC
ANCIENT GNEISS COMPLEX
ANDAGUA (ANDAHUA) VOLCANIC FIELD;PERU
ANDAMAN AND NICOBAR ISLANDS;SUNDA ARC
ANDAMAN ARC
ANDAMAN BASIN;SUNDA ARC
ANDEAN ARC
ANDEAN BASINS - MESOZOIC
ANDEAN BASINS - PALEOZOIC
ANDJU VOLCANIC FIELD;SOUTH KOREA
ANDOVER COMPLEX;AUSTRALIA
ANDRIAMENA AREA;MADAGASCAR
ANEWETAK SEAMOUNT TRAIL
ANEWETAK;ANEWETAK SEAMOUNT TRAIL
ANFENGSHAN;CHINA
ANFITRIDE BANK;SICILY CHANNEL RIFT
ANGARA-TASEEVA REGION;SIBERIA
ANGICO DOS DIAS COMPLEX;BRAZIL
ANGOLA
ANGOLA SHIELD
ANHUI PROVINCE;CHINA
ANI(E)JIMA;IZU-BONIN ARC
ANIAKCHAK;ALEUTIAN ARC
ANIALIK RIVER GREENSTONE BELT;CANADA
ANIKA;SELVAGEN ISLANDS
ANJOS;AZORES
ANJOUAN (NZWANI);COMOROS
ANKARATRA VOLCANIC COMPLEX;MADAGASCAR
ANKILIOAKA DISTRICT;MADAGASCAR
ANNAN;GRIMALDI SEAMOUNT CHAIN
ANNOBON (PAGALU);CAMEROON LINE
ANOCARIRE;CHILE
ANOROGENIC ALKALINE COMPLEXES;WESTERN EAST AFRICAN RIFT
ANSHAN-BENXI GREENSTONE BELT
ANTALOVSKI;CARPATHIAN ARC
ANTANANARIVO DOMAIN;MADAGASCAR
ANTARCTIC PENINSULA
ANTARCTICA
ANTARCTICA/PATAGONIA - MESOZOIC
ANTI-ATLAS;MOROCCO
ANTICALLANCA;CHILE
ANTICURA;CHILE
ANTIGUA;LESSER ANTILLES
ANTILLANCA VOLCANIC GROUP;CHILE
ANTILLANCACHILE
ANTIPAROS;AEGEAN ARC
ANTIPODES ISLANDS;NEW ZEALAND
ANTIPSARA;AEGEAN ARC
ANTISANA;ECUADOR
ANTOFAGASTA DE LA SIERRA;ARGENTINA
ANTOFALLA VOLCANIC COMPLEX;ARGENTINA
ANTUCO;CHILE
ANUCHINA;KURILE ARC
ANYUI;OKHOTSK-CHUKOTKA ARC
ANZA GRABEN;EAST AFRICAN RIFT
AOBA (=AMBAE);NEW HEBRIDES ARC
AOGASHIMA RIFT;IZU-BONIN ARC
AOGASHIMA/AO-GA-SIMA;IZU-BONIN ARC
AOGE;HONSHU ARC
AOJIKI;RYUKYU ARC
AONOKIMORI;HONSHU ARC
AONOYAMA/AONO-YAMA;HONSHU ARC
AOSO;HONSHU ARC
AOSTA VALLEY
APACHETA;CHILE
APACHETA-AGUILUCHO VOLCANIC COMPLEX;CHILE
APAGADO;CHILE
APAS;MEXICO
APASTAPEQUE;EL SALVADOR
APASTEPEQUE;EL SALVADOR
APENNINE
APENNINIC-MAGHREBIDES CHAIN
API SIAU;SULAWESI (SANGIHE) ARC
API;SUNDA ARC
APIAI COMPOSITE TERRANE;RIBEIRA BELT
APOYEQUE;NICARAGUA
APOYO;NICARAGUA
APPALACHIAN PLATEAU
APPALACHIANS
APULIA
APUSENI MOUNTAINS;CARPATHIAN ARC
AQABA COMPLEX;JORDAN
AQUILIRI;ARGENTINA
ARABIAN FORELAND
ARABIAN PLATFORM
ARABIAN-NUBIAN SHIELD
ARACUAI OROGEN
ARAFO;CANARY ISLANDS
ARAFUNEYAMA
ARAGATS NEOVOLCANIC AREA;CAUCASUS
ARAGATS;CAUCASUS
ARAGO;AUSTRAL-COOK ISLANDS
ARAGUAIA BELT
ARAILER;CAUCASUS
ARAKADIYAMA;HONSHU ARC
ARARAL;CHILE
ARARAT;ANATOLIA
ARARIPE BASIN;BRAZIL
ARAVALLI CRATON
ARAVALLI FOLD BELT;INDIA
ARAYAT;LUZON ARC
ARCHERNAR GUYOT;LOUISVILLE SEAMOUNT CHAIN
ARCHIBARCA;ARGENTINA
ARCTIC ALASKA-CHUKOTKA MICROPLATE
ARDENNE
ARDOUKOBA;RED SEA RIFT
AREACHAP GROUP;NAMIBIA
ARENAL;COSTA RICA
ARENGKAMBING;SULAWESI (SANGIHE) ARC
ARGENTINA
ARGENTINA/BOLIVIA
ARGENTINA/CHILE
ARGENTINA_MESOZOIC
ARGENTINA_NEOGENE
ARGENTINA_PALEOZOIC
ARGENTINA_PROTEROZOIC
ARGO ABYSSAL PLAIN;INDIAN OCEAN
ARGO BASIN SEAMOUNTS;CHRISTMAS ISLAND SEAMOUNT PROVINCE
ARGO POINT;SCOTIA ARC
ARICA;CHILE
ARIK;KAMCHATKA ARC
ARINTICA;CHILE
ARISTOTELIS;FOUNDATION SEAMOUNT CHAIN
ARIVECHI BACK-ARC BASIN
ARIZONA
ARKANSAS
ARKANSAS BASIN
ARKANSAS RIVER SILLS;ARKANSAS
ARKAYASAR;CAUCASUS
ARKHANGELSK PROVINCE
ARMAGAN;CAUCASUS
ARMAN VOLCANIC FIELD;OKHOTSK-CHUKOTKA ARC
ARMENIA
ARMORICAN MASSIF;FRANCE
ARMYKON HILL;EAST AFRICAN RIFT
ARNARBAELI;ICELAND
ARROYO;GRIMALDI SEAMOUNT CHAIN
ARTENI;CAUCASUS
ARTOGNA VALLEY
ARTSIVISTSVERI;CAUCASUS
ARTSRUNI;CAUCASUS
ARUBA;CARIBBEAN-COLOMBIAN PLATEAU
ARUCAS;GRAN CANARIA
ARVEPRINSEN EJLAN BELT
ASA ALE;EAST AFRICAN RIFT
ASACHA;KAMCHATKA ARC
ASAKUSA;HONSHU ARC
ASAL RIFT
ASAL;EAST AFRICAN RIFT
ASAMA;HONSHU ARC
ASAR;ICELAND
ASARI-DAKE;HONSHU ARC
ASCASTA GNEISS COMPLEX
ASCENSION
ASCOTAN;CHILE
ASFAR GROUP;JORDAN
ASH LAKE PLUTON;CANADA
ASH MOUNTAIN;BRITISH COLUMBIA
ASHAQEF USEFIR;JORDAN
ASHIKULE VOLCANOES;CHINA
ASHISHAN;CHINA
ASHITAKA;IZU-BONIN ARC
ASHTON;MADEIRA RISE
ASHTON;TORE-MADEIRA RISE
ASIO;PERU
ASIR SHIELD TERRANE;SAUDI ARABIA
ASKJA;ICELAND
ASMARA TERRANE;ETHIOPIA
ASO;RYUKYU ARC
ASOSOSCA MAAR;NICARAGUA
ASPIRING TERRANE;NEW ZEALAND
ASSAB VOLCANIC FIELD;EAST AFRICAN RIFT
ASSAM;INDIA
ASSAM-MEGHALAYA PLATEAU;INDIA
ASSAREL;CARPATHIAN ARC
ASSINICA SEGMENT;CANADA
ASTROLABE ISLANDS;TONGA ARC
ASUNCION;MARIANA ARC
ASUNCION-SAPUCAI-VILLARICA IGNEOUS PROVINCE;PARAGUAY
ATA;RYUKYU ARC
ATA;TONGA ARC
ATAA AREA;GREENLAND
ATACAZO-NINAHUILCA;ECUADOR
ATAGODAKE;HONSHU ARC
ATAGO-YAMA;RYUKYU ARC
ATAKOR VOLCANIC FIELD;ALGERIA
ATALAYA DE FEMES;LANZAROTE
ATAMI;IZU-BONIN ARC
ATAQ;YEMEN
ATASCOSA MOUNTAINS;NEW MEXICO
ATAURO;BANDA ARC
ATAV;RYUKYU ARC
ATCHIYAMA;IZU-BONIN ARC
ATECUARO;MEXICO
ATESINA (ATHESIAN) VOLCANIC COPMPLEX;ITALY
ATIKWA LAKE PLUTON;CANADA
ATILLANCA;CHILE
ATIS;CAUCASUS
ATITLAN;GUATEMALA
ATIU;AUSTRAL-COOK ISLANDS
ATKA BASIN
ATKA;ALEUTIAN ARC
ATLANTIC COASTAL PLAIN;APPALACHIANS
ATLANTIS BANK OCEANIC CORE COMPLEX
ATLANTIS FRACTURE ZONE II
ATLANTIS II;NEW ENGLAND SEAMOUNT CHAIN
ATLAS MOUNTAINS
ATLASOVA ISLAND;KURILE ARC
ATLIN VOLCANIC FIELD;BRITISH COLUMBIA
ATLITZIN;MEXICO
ATOSANUPURI;KURILE ARC
ATSAGIN-DUSH;MONGOLIA
ATTAWAPISKAT KIMBERLITE FIELD;CANADA
ATTU;ALEUTIAN ARC
ATUNAI GROUP;KURILE ARC
ATUONA;MARQUESAS
AUBERT DE LA RÜE;KERGUELEN
AUBRAC PLATEAU;FRENCH MASSIF CENTRAL
AUCA MAHUIDA VOLCANIC FIELD;ARGENTINA
AUCANQUILCHA VOLCANIC CLUSTER;CHILE
AUCKLAND DOMAIN;NEW ZEALAND
AUCKLAND ISLANDS;NEW ZEALAND
AUCKLAND VOLCANIC FIELD;NEW ZEALAND
AUCKLAND;NEW ZEALAND
AUGUSTINE ISLAND;ALEUTIAN ARC
AUGUSTINE;ALEUTIAN ARC
AUGUSTUS PLUTONIC COMPLEX;CANADA
AUKENA;PITCAIRN-GAMBIER CHAIN
AULNEAU BATHOLITH;CANADA
AUR;MALAYSIA
AURORA VOLCANIC FIELD;CALIFORNIA
AUSTRAL VOLCANIC ZONE
AUSTRALIA
AUSTRIA
AUSTURDALUR;ICELAND
AUVERNIA VOLCANO;ARGENTINA
AVA;GILBERT RIDGE SEAMOUNTS
AVACHA (AVACHINSKY);KAMCHATKA ARC
AVALON ZONE;APPALACHIANS
AVANAVERA LARGE IGNEOUS PROVINCE
AVES RIDGE;CARIBBEAN-COLOMBIAN PLATEAU
AVOS;KURILE ARC
AWAJI-SHIMA;HONSHU ARC
AWANOMIKOTO-YAMA;IZU-BONIN ARC
AWAROA;NEW ZEALAND
AWASHIMA;HONSHU ARC
AWU;SULAWESI (SANGIHE) ARC
AXLARHYRNA;ICELAND
AYAME-DAIRA;HONSHU ARC
AYARZA;GUATEMALA
AYAS VALLEY
AYELU;EAST AFRICAN RIFT
AYICHINGILLI;AZERBAIJAN
AYUTLA;MEXICO
AZ C. CHILES;COSTA RICA
AZ JUAN MURILLO;COSTA RICA
AZ PITAL; COSTA RICA
AZ-14 SITE;UKRAINE
AZERBAIJAN PROVINCE;IRAN
AZERBEIJAN
AZORES
AZOV BLOCK
AZOV KIMBERLITES;UKRAINE
AZROU VOLCANIC FIELD;ALGERIA
AZROU-TIMHADITE VOLCANIC FIELD;MOROCCO
AZUFRAL;COLUMBIA
AZUFRE;CHILE
AZUL REGION;ARGENTINA
AZUMA;HONSHU ARC
AZUMAYA;HONSHU ARC