NUREG/CR-4632, Forwards Camera Ready NUREG/CR-4632, New Madrid Seismotectonic Program Final Rept, for Publication.Nrc Forms 335 & 426A Also Encl.W/O Rept

Forwards Camera Ready NUREG/CR-4632, New Madrid Seismotectonic Program Final Rept, for Publication.Nrc Forms 335 & 426A Also Encl.W/O Rept

ML20198H344
Person / Time
Issue date:	05/16/1986
From:	Beratan L NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
To:	Larkins P NRC OFFICE OF ADMINISTRATION (ADM)
References
CON-FIN-B-7242, RTR-NUREG-CR-4632 NUDOCS 8605300282
Download: ML20198H344 (6)

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P.m ;c, MEMORANDUM FOR: Patricia Larkins

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FROM:

Leon L. Beratan, Chief Ecturn stc-sta, Earth Sciences Branch to ns,ye3 _V n,_

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and Earth Sciences, RES

SUBJECT:

TRANSMITTAL OF NUREG/CR-34632, "NEW MADRID SEISM 0 TECTONIC PROGRAM FINAL REPORT" Transmitted herewith is the camera ready copy of the subject report for publication as a NUREG document. Also enclosed are completed fikC forms 335 and 426A. Please include the contract number on the title page.

i Leon L. Beratan, Chief Earth Sciences Branch Division of Radiation Programs and Earth Sciences, RES i

Enclosures:

3, as stated

Contact:

E. O'Donnell 427-4340 Distribution /R-2811:)DR Circ /Chron Sj ESB Sbj/Rd inogue Dross KGoller LBeratan AMurphy RES:ES@pa E0donnell V

RES:ESB:pf RES:ESB E-E0donnell ro AMurphy LBeratan 5/.0/86 of/p /86 or//C/)86 c,. w 8605300282 860516 PDR NUREQ CR-4632 C PDR

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NRC CONTRACTOR AND CONSULTANT REPORTS

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6. D AT E MANUSCRIPT 7 NRC PROGR AM SPONSOR / TECHNIC AL MON: TON l TE LE PHONE NO.

COMPLET E D January 1986 Edward O'Donnell 427-4340

0. CON T R ACT D AT A a CONT R ACT OR 6 IN NUM8E R #Do smer Ass D04.anerect aumbeee of Causes prented Estemated Comoos.t.on Case Esi mated Pe nt no Cost i

9 TYPE OF OOCUMENT (O5ecA appropr'afe 004/

Xl e TE CwNiC AL REPORT alt F ORM AL (29 (NTE R eM lo CONF F R E NCE P APE R ett T TLE OF CONFE RENCE PAPE R 125 OATEtS) OF CONFERENCE E35 LOCAf TON OF CONF E RENCE

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10. 59E Cs AL Of S T Rt90 TION t$end est coo es so rne Osseteren Serv.ces Bronch O*v s on or Technocer entormeren and Document Centro!I 45peco% soecost enstrwetoons such as Mane seasoorte onk as soecohcero soproved tv program e oce ' or " Send to streched addressees " Sutmor addressed manhng roters 9er soecomo s

rr sh ste t wren Contenue snstrecroons on reverse or separere sheer of necesserv s I

Send'50 copies to author:

Dr. Thomas C. Buschbach Box 1620 Champaign, Illinois Send 1 copy to each of those listed on attached address labels

11. PATENT CLE AR ANCE t// a001,cabte/

12. SUBMITTED BY s.

AME OF AUTHORIZEO CONTR ACTOR OF Fact AL OR NRC MONITOR Fope se p**r fs F ee naed c ompieted. s.one<t N R C F oem 4 26 A togethe, Edward O'Donnell a aa, -mea 'a' ma ** a'a','.4t eaient Counwe TO A.

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2. TITLE A8eO sustiTLE New Madrid Seismotectonic Program Final Report e oaf t atPORT COMPLETEO esOmin vtAR January 1986

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T. C. Buschbach.,

g Q.T vtAa T. Penf OawiNG omGamq ATSON h AME AWQ 4s A4 LING ADDRt5S ifardwes te Coel 8 PROJECTIT A5atWOmE u'est huesetR St. Louis University P. O. Box 8099 Laclede Station e n= Oa GaA=T au=ua St. Louis, Missouri 63156 B 7242 11 SPON50as*G onGam 2 ATsom h Awt Amo esA LING ADDRiss tsaraves te Ceses sie TYPE OF REPORT Division of Radiation Programs and Earth Sciences Final Office of Nuclear Regulatory Research U.S. Nuclear Regulatory Commission

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Washington, D.C.

20555 1977-1985 12 SUPPLEMENT ARY NOTt5

" ' " " ' ' " ~ ' ~ ~

The New Madrid Seismotectonic Program was a large-scale multidisciplinary effort that was designed to define the structural setting and tectonic history of the New Madrid area in order to realistically evaluate earthquake risks in the siting of nuclear facilities.

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The tectonic model proposed to explain the New fladrid seismicity is I

the " zone of weakness" model, which suggests that an ancient rift conplex formed a zone of weakness in the earth's crust along which regional stresses are relieved.

The Reelfoot Rift portion of the proposed rift conplex is currently seismically active, and it must be considered capable and likely to be exposed to large-magnitude earthquakes in the future. Earthquakes that occur in the i

Wabash Valley area are less abundant and generally have deeper hypocenters than earthquakes in the New Madrid area. The area of the Southern Indiana Arm must be considered to have seismic risk, although a lesser extent than the Reelfoot Rif t.

The east-west trending Rough Creek Graben is practically aseismic, probably in large part due to its orientation in the current stress field. The northwest-trending St. Louis Arm of the proposed ' rift conplex includes a pattern of seismicity that extends from southern Illinois along the Mississippi River. This arm must be considered to have seismic risk, but because of the lack of development of a graben associated with the arm and the orientation of the arm in the current stress field, the risk appears to be less than in the Reelfnot Rift portion of the rift complex.

14 COcust%7 ANALv5 5 - e utvwomO5/Ot3CRePTORS 15 AV AILAB.L61 Y New Madrid Missouri Illinois siesmotectonic Indiana Alabama unlimited rift Kentucky Arkansas earthquakes Tennessee Reelfoot Rift Pascola Arch unc$ssified

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MEMORANDUM FOR: Patricia Larkins Division of Technical Information and Document Control, ADM FROM:

Leon L. Beratan, Chief Earth Sciences Branch Division of Radiation Programs and Earth Sciences, RES

SUBJECT:

TRANSMITTAL OF NUREG/CR-34632, "NEW MADRID SEISM 0 TECTONIC PROGRAM FINAL REPORT" Transmitted herewith is the camera ready copy of the subject report for publication as a NUREG document. Also enclosed are completed NRC forms 335 and 426A.

Please include the contract number on the title page.

Leon L. Beratan, Chief Earth Sciences Branch Division of Radiation Programs and Earth Sciences, RES

Enclosures:

3, as stated

Contact:

E. O'Donnell 427-4340 Distribution /R-2811: (

Circ /Chron DCS/PDR s

ESB Sbj/Rd RMinogu Dross KGoller LBeratan AMurphy RES:ESQlA E0donnell RF RES:ESB:pf RES:ESB E0donnellEh3 AMurphy LBeratan 5 / 4/86 or//(/8g af/gf/86

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2. DiST R :ufiON C ATE oOav NO.

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3. TITLE ANO SUBTeTLE #5 tere en Ivar as she-a on documeng New Madrid Seismotectonic Program Final Report

4. AUT HORS sat muer enen t eee e,me hest evtnce tono.ed e, and einers 7 T. C. Buschbach-I "o'x'N@fl"a'cl e'dETt'dTEn ' ''''''''"

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5. D AT E M ANUSCRIPT

7. NRC PROG R AM SPONSOR / TECHNIC AL MONITOM l T E LE PHONE NO.

COMPLE T E O January 1986 Edward O'Donnell 427-4340

8. CON T R ACT D AT A e CONT R ACT OR F IN NUMSE R #Do not test DOI sentract numbert

b. OF CONTR ACTOR IS AUTHORIZE O TO PRINT. PLE ASE PROvlOE THE FO LLOWING INFORM ATION Nmber os Coo.es Frented Essemeted Comrms.t.on Cost Estimeteo Pr.at ng Cost

9. TYPE OF OOCUMENT (Chece approprsete boaf Xl e TECHNIC AL REPORT all 5 ORMAL (21 IN TE RIM lb CONF E RE NCE P APE R til TITLE OF CONFE RENCE PAPE R t2 D ATEtSt OF CONFERENCE 131 LOCATION OF CONF ERENCE s.

OTHER tone. case twe of orem eg tarsos speech towenst estnere gurde etti 1o SPE Ce A L O'ST RIBUTSON v5end au cop en to the O strutut*on Servoers 8:enen D* soon of Teenn,ter antarmaroon andDocument Controli Isoech soecoor unstrecroons such as Meer eventatte eno es specohesu oporoved tv program eMace

• or '3end to atteened ederessees " Sermor addressed me tong toters too speenes r

s d,stratur.on Conteue onstruct*ons on reverse er s*oerste sheer of neersservi Send'50 copies to author:

Dr. Thomas C. Buschbach Box 1620 Champaign, Illinois Send i copy to each of those listed on attached address labels

11. PATENT CLE AR ANCE Ilf 80pI'ceb/c/

12. SUOMITTED BY

e. N AME OF AUTHORIZE D CONTR ACTOR OF FICt AL OR NRC MONITOR F.oc oe pa.e.fr F oe-eed compeeted. s.gner1 NRC F oem 426 A togetaer

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E.*" E-BIBLIOGRAPHIC DATA SHEET NUREG / CR 4632 Sta esestmuCTIO8sS Oss f ut E 4vtast 3 Lt AVG GLAsnt

• ftTLE AND SutisTLE New Madr.id Seismo* tectonic Program Final Report 4 oATE mtPORT COMPLETt0 esOeein WGAA January 1986 T. C. Buschbach,.

esOesTn v 5 Afi s.

f. Ptof Omus4G OaGame2 AlsO85 N AME AND M AILING ADDmE55 fsserever te Cael S PROJECTIT AsaturO8ts useet seuesetR St. Louis University P. O. Box 8099 Laclede Station e nt oa oaa4> NuM=

St. Louis, Missouri 63156 B 7242 10 S*0450ReNG ORGANS 2 ATIOm asaut AND MAILe4G ADDat$$ tiarewer te Ceses sie TYPE OF REPORT Division of Radiation Programs and Earth Sciences Final Office of Nuclear Regulatory Research U.S. Nuclear Regulatory Commission

. naiOo COvtato r-a- >

Washington, D.C.

20555 1977-1985 12 SUPPLiutNYany NOtts

" ' " ' " ' ' ' ' ~ ~ ~ '

The New Hadrid Seismotectonic Program was a large-scale multidisciplinary effort that was designed to define the structural setting and tectonic history of the New Madrid area in order to realistically evaluate earthquake risks in the siting of nuclear. facilities.

The tectonic model proposed to explain the New fladrid seismicity is the " zone of weakness" model, which suggests that an ancient rift conplex formed a zone of weakness in the earth's crust along which regional stresses are relieved.

The Reelfoot Rift portion of the proposed rift conplex is currently seismically active, and it must be considered capable and likely to be exposed to large-magnitude earthquakes in the future. Earthquakes that occur in the Wabash Valley area are less abundant and generally have deeper hypocenters than earthquakes in the New Madrid area. The area of the Southern Indiana Arm must be considered to have seismic risk, although a lesser extent than the Reelfoot Rif t.

The east-west trending Rough Creek Graben is practically aseismic, probably in large part due to its orientation in the current stress field. The northwest-trending St. Louis Arm of the proposed ' rift conplex includes a pattern of seismicity that extends from southern Illinois along the Mississippi River. This arm must be considered to have seismic risk, but because of the lack of development of a graben associated with the arm and the orientation of the arm in the current stress field, the risk appears to be less than in the Reelfoot Rift portion of the rift complex.

Se OOCUMENT AN ALvsis -e KEvvvonos/DilCnierOa5 inAvaLaeLify New MadriAl Missouri Illinois siesmotectonic Indiana Alabama unlimited rift Kentucky Arkansas

" * * " ' " * ' ' " ' " * ^ ' * "

earthquakes Tennessee Reelfoot Rift Pascola Arch nc$ssified mio n finias,0,n n oto n.

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