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INSIDE . GSA Recycles, p. 31 . Rocky Mountaln-South Central Sect10ns Meeting. p. 35 . GSA Educational Coordinator, p. 38 lhII..... 01 s.nt'l.IlIIIdo. en 1M IIIlUIIUl ~ Gubbio, Italy. A ~~Auly IIIhop tI GlItIbIo. SaInt. UbaIdo.1Id IhI cItiIIeM "" the IoUacdona GotgiIlt night (put tho. KlTIIoloaIoIy)""'__NpdIlng'" drlWlgdf......._...... "'-. ....,.___ balogIng ......... _IoyW__ The Gentle Art of Scientific Trespassing SeophyslclJt Jack Evanden, and pile- ontolopl: Don SlWF (Glen, 1912). The second mroIutlon, which brouJht us plate ttctonla, had In aborted stan wtth the mmorolozlsl AlmdW~.thtntookoffwtth poIo&tst Hany Hell and polOSlsh, SeophysldJtJ and paJeontolopts, ph)'Sldsb,. and d1emlstll too numerous IOUsL Loomln, on the horizon Is . comln. revolution In I.Indtrstandlns Elrth IS' symm. which wiD surely InYOM: people from blololY. euth lCIenca, enllneerlna. physla. chem. Istry, and mathematla. Intudbdplln.ry work has.ba hem charac:terbdc of the cumntly Ie- dn and controwrslal rtVOluUOn OYer the role of Impacts and other ala. .trophlc events In Earth history. this development II fordna: the rt:IKtlon of daulcal unlfonnJtlrtanlsm. II we JUl. IzI: Ihal modem ItolosJsts mwt be ablt to think about both sudden and lradual chanles In order to under- stand the hbtory 01 Elrth. Shortly before the diSCOVery of the ItlUan CntlceGUJoTerttary Iridium anomaly, W.'tlrAI""tu Dtponmmr .fGcol"l1"nod a..physla Un"""'ry ofCnllfbml. _.,. CA 94120 ABSnAcr Itaearcb OD 1mpK'b ud.... extlnctloDllw betn lnterd1sdpUnary In the extreme. At the fkId bas deftIoped, the scleatbtllnvolved hive tCllmed a nm:aber 01 WIIp of brId&lDI the burled that nonnally IepIorate specialties. The moll dUBcuIt probleaY mYOtw dllftreD.t traInInJ' In the primary and secondary KIenaI, dIll'Innt cu1luft1ln dlf'faentlldeaces, perceptlans af a hMIa!dIy or pec:IdIIa: order of Idmca, tudllnllhe quality of sdmlltlc work, aad Ihe ban1er of faIJOII aDd IechnlcallanpaaL DolnllntadlsdpUnary IdencI! l.D.votftlleualDt the Iaquap 01 dlfl'e:rent nellis, aacI when this Is done, IDOII of Ibe otberbanlen m.e1ta....y. Perhaps the lntadlsdpllnary Ityle Ibatls powInJ up In this fteld may eftllluaUy be u Important u the thlnp WI are IamlDlabout Impac:tland DlUI extinctions. INI'RODUcnON That seelDJ to be a close associ. atilm between InlerdbclpUnary Jdmce Ind rtYOluUonarydevelopmentlln ISSN 10$2.'17) lcolOSf, 'Ithoup It's nOl clear which (If either) Is aUM Ind which Is effect. You mlaht dlSlIree. but I think I see tow rn'Olutlons In 20th century leol. 01)'. The tint broulht us radiometric dlUnl. The Interdlsclpllnlry ch.racter of this drwlopment could be symbol. lad by the collaboration It Berkeley In the 1950s Ind 19601 between physldsl John Reynolds, leolOllst Gamlss Curtis, we were a1rady cIoInalntadlJdpllnary raeuch at Gubbio. In the Apenlllna, IS a tum ranpnl from pakomaanetlst 81U Lowrle to mlaopaleontoJoslst Isabell. PremoU SilVa corrdated the blOSb'lUpaphk and maplftOStratl. paphJc lime scala (Alv&raetal.. 1977). The Iridium Inomaly dbcoYer)' paper (Alvarez et.1.. 1910) wu written by. particle physicist. I poloclst. and two nuclear chemists. AlmosIlmmed1a.ttI1, other InterdbdpUnary poups bepn ta work on the problem. One early paper WIS wrl.ttm by In ocanoppher. In atmospheric sckntlst. and a planetlry polopt (Emlllanlet .1.. 1981), and I more recent, utreme uample was written by two &stronomen, two ItOlopt:s. .nd four paleontoJotLltl (Hutetal., 1987). Mlny other questtaRJ In geoloey involve Input horn chemistry or bloloey or ph)'JIcs. but they do nOI often .ttrK!: chemists Ind blolollsh .nd physldSts to work on them; they SIIY strictly In the m.lnstmm of poloey. Why did this partlcullr topic.. Trespudal coni/mild Ofl p. 30 SECOND ClASS PoIlIlV.Pald --.~- ----.- Fe"8 -I "lor I ';) ., " ~., ..