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Magmatism associated with the Alto Paranaíba structural high comprises kimberlites, kamafugites, and alkaline complexes, forming an approximately 400 x 150 km NW-SE belt in the southern São Francisco Craton. Dating of some intrusions reveals ages between 120 and 75 Ma. Chemical analyses of garnet recovered in alluvium from traditional diamond digging areas indicate peridotitic garnet windows in Três Ranchos and Coromandel. Six hundred and eighty (680) diamonds acquired or recovered during mineral exploration in the digging areas of Romaria, Estrela do Sul, Três Ranchos and Coromandel show unique characteristics, certain populations indicating young, proximal and primary sources (YPP). Analyses of 201 stones from Santo Antônio do Bonito, Santo Inácio and Douradinho rivers alluvium, Coromandel, present no evidence of transport, characterizing a proximal source. Within these river basins, exposures of the Late Cretaceous Capacete Formation basal conglomerate contain mainly small rounded and/or angular quartzite pebbles and of basic and ultrabasic rocks, as well as kimberlite minerals (garnet, ilmenite, spinel, sometimes diamond). A magnetotelluric profile between the Paraná and Sanfranciscana basins shows that the thick underlying lithosphere in the Coromandel region coincides with the peridotitic garnet window and with a diamond population displaying proximal source characteristics. Diamond-bearing kimberlite intrusions occur in different areas of Alto Paranaíba. KEYWORDS

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E m cscaln global. mcnox de I% {los kimbcrhros podc m sc r cousidcrados cc oncmicos. c somcnrc 15 pipe s cons tit ucm mi nas de dinnunrc de class c mundial. Ate a dc cadn de XO do scc ulo passndo. cxccto os dep ositos aluvionarcs. os kimbcrlitos locali zados no s Cratons arqucanox consriunam a unica fontcvnlvc t de diamamc. A dcscobcuu em Argy le-Austuilju de uma nova roc hn (olivine lamproft c) com altos tcorcs de diamuurc. rcdirccionou as pcsquisas para urn novo alvo. as Iaix us ruovcis que circ undam os cratons arqucauos. A se le<;50 da tccuicu tunis upropriada cm um programu de ex plor:ur:lo pa ra kim bcrlito c/o u kuupro uc diumantifcm bascia-sc na dispouibilidadc de mapas gcologicos udcquudos, fotogrcfias acreus. lcvam.uucntos gcollsicos c no conhecimento dn cvoluc.to geo logic a da drcn. A tccnica de umosuugcm para rccupcracno de mincmis indicndore s Ccmprcgada cmrodo 0 muntin c vern scndo pnuicuda dcsdc que o kimberlite foi rcccnhccido e m Kimberley, Africa do S ui, como a rocba fOUlC do diamamc. Os resu ltados da tccuica I.'St:IO fuudamcmudos nas runiliscs gc oqunnicas do s ruincmi s sin gcncucos uu diamame. A mug nctomcrr ia ucrc.v tcrrcstrc consritu i a scg unda tccnicauuus usaduna delel,.•<;:-Io dirct a de kunbcrlitovlamproitos. E m Minas Gerais, cssa rccnica foi rcs ponsdvcl pcla idcntifi cacao de ccntcnns de kimbcrhtos c rochn s rclacionadas. A inlcg ra<;iio de dodos srsmicos. gravimc tricos C ncromagncticos com gcocronologia c gc oqunuica des mincmis indicadorc s podcm prcporcionar a dc finicno de runbic ntcs du Iitosfcru fuvortivcis II preservacao do dinmautc. Trubalhus dcssc tipo Ionun rcaliz ados na por<;:IO norte do Cruron do Siio Francisco. A integr:l(r: 1o de imngens de satclitc TMzradarco m forogmfia s acrcas rem side usuda rotincirnmcmc nn idcntifi cacno de Icicecs rcfucionadns us innusoc s de kimbcrlit us no B ras il. 0 succsso do uso de fotc grufi as ucrc us nu dctcl.' <;ao dircra de kimbcrlitos bas cia-sc principalmcnt c no c onuus tc da cob crnnu de vcgcmcuo entre a inuusno c a cncnix antc. A partir de Itj97 , scanners uurhicspccuuis pa ssaralll a scr usados na prospcccno clc kimbcrlitos. 0 cquipumcmc ope ra no intervale do cspcctro de on dns do S W IR, dcs tcc.mdo nuonuilias f\.1g(O Il). 0 arng o aprcs cntu bre ve rccupitulucuo sobrc kimberlite. Inmproito. genese d o diunuuuc c rcvc as tccnicns cxplomtcrius ruais nsadas.

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