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The principal water‐bearing units (in descending stratigraphie order) in Pipeline Canyon are the alluvium, the Dilco Coal Member of the Crevasse Canyon Formation, the Torrivio Sandstone Member of the Gallup Formation, and the Upper and Lower Gallup Sandstones. Presently, the alluvium is recharged by a perennial, southward‐flowing stream sustained by mine dewatering discharge in addition to natural precipitation and runoff. Localized infiltration has created ground‐water mounds in the alluvium. Artesian conditions may exist in sandstone units which are adjacent and hydraulically connected to the alluvium in these areas. Basement faults have produced the Fort Wingate and Pipeline Canyon lineaments which intersect in the area of investigation. Fault‐related fracturing of the sandstones allows for significant ground‐water recharge via the overlying alluvium. Flow in the sedimentary formations is generally to the northeast, while the alluvial system flows to the southwest. The natural water quality for the aquifers in the area is dominated by sodium and sulfate ions. However, complete characterization of the natural water quality is complex because of ground‐water contamination by acidic tailings fluids from a local uranium mill.

Carl Schorlemmer" Leuna-Merseburg, Selrtion Physik, DDR -42 Leuna-Merseburg Unter der Voraussetzung, daS fur die Glasubergangskurveii in den Diagrammen log v -T bzw. log v -p WLFGleichungen gelten, sind die Isochronen des Glasubergangs im Druck-Temperatur-Diagramm entweder parallele Geraden oder Hyperbeln mit von der Frequenz unabhangigen Asymptoten p = 17 < 0 und T = 8. Abschatzungen fur polymere Werkstoffe ergeben fur -L7 einige 100MPa und fur 8 -T , etwa 100 bis 200 K. Die Isochronen des Glasuberganges sind Linien, auf denen das Volumen der kooperativen Umlagerungsbereiche naherungsweise konstant ist. Es wird ein Zustandsdiagramm fur glasbildende unterkiihlte Flussigkeiten vorgeschlagen. Mit Hilfe dieser Ergebnisse konnen einige wesentliche Erscheinungen der ersten Etappca der SpannungsriSbildung (craze initiation) erklart werden. 0 6 o6tueii meopuu aaeucwocmu cmemoeanua om aasaefiua u npmenuwocmu ee i~ nauany meqsecmu noaurepos e ~mem006pa3now cocmoanuu npu XUQIEUX mernepamypax nPU YCJIOBEIH, 4TO KpHBbIe IIepeXOna B CTeKJIOO6pa3HOe COCTOHHHe B KOOpAHHaTaX log V -T HJIA log V -p OIIHCbIBa-IOTCR YPaBeHHHHMH BHJIbRMCa-JIaHnenH-~eppH, H3OXPOHbI IIepeXOAa B CTeKJIOO6pa3HOe COCTOHHHe B l'pa@EIKe TaCTOTbI aCHMnTOTaMH p = n < 0 A T = 8. nIyTeM OPHeHTMPOBO4HbIX PaWCTOB AJIR llOJlMMepHk3X MaTepHanOB IIOJIyWUOTcR njIS p -17 HeCKOJIbKO 100 MIIa H 8-T, OKOJIO 100-200"K. H3OXpOHbI IIepeXOAa B CTeKnOO6pa3HOe COCTOHHHe HBJIHIOTCH JIHHHHMH, H a KOTOPMX o 6~e~ KOOIIepaTHBHbIX 0 6 n a c~e t llepeCTpOf8KH OKa3bIBaeTCH IIPEI~JIH-IIepeXOAy B cTeK~l006pa3HOe COCTORHHC?. nOJIyreHHbIe pe3yJIbTaTM IIO3BOJIHH)T 06ZHCHHTb HeKOTOpHbIe OCHOBHbIe JXBJIeHEIH IIepBbIX CTaAEIa PaCTpeCKHBaHHH. EasneHue-TeMnepaTypa O K~~H B~W T C H nm6o napanjIenbHbIMH IIPRM~IMA an60 r~n e p 6 o n a~~i c H~~~B H C R~H M H OT m e m o IIOCTORHHHM. IIpennaraeTcR n n a r p a m a COCTORHEIH AJIH nepeoxnaxgemax mHnKocTet, cnoco6~b1x K On the general theory of the pressure dependence of glass transition and the application to the initiation of flow phenomena in glassy polymers at low temperatures Supposing the glass transition curves can be described by WLF type equations in the diagrams: logarithm frequency against temperature and logarithm frequency against pressure, the isochrones of the glass transition are parallel straight lines or hyperbolas in the diagram pressure against temperature. I n the case of hyperbolas the asymptotes p = L7 < 0 and T = 8 are independent on frequency. Estimations give some 100 MPa for -17 and 100 K to 200 K for 8 -T , in the case of polymers. The volumes of cooperatively rearranging regions are nearly constant along the isochrones. A state diagram for glass forming undercooled liquids is suggested. With the aid of these results some essential phenomena at the first steps of craze initiation can be esplained.

Sunz+naryThe efficient catalysis by [C~(mnt),],~-(mnt = maleonitriledithiolate) of the reaction 2PhCH,SH + 0, + PhCH,SSCH,Ph + H,O, in acetonitrile, acid-buffered with excess of PhMe,N/PhMe,NH+ClO,-, is described ; the mechanism involves sequential co-ordinative activation of thiol and oxygen, the reactive intermediate being PhMe,NH--0,-[Co (mnt),],-SCH,Ph2-.