§̈¦540

§̈¦40

§̈¦40

§̈¦30

§̈¦530

§̈¦40

§̈¦40

§̈¦55

§̈¦30

1699

1972 (M4.2)

1918 (M4.4)

1937 (M4.4) 1970 (M4.4)

1966 (M4.3)

2005 (M4.1)

2003 (M4.0)

1996 (M4.3)1971 (M4.1)

2005 (M4.1)

1955 (M4.0)

1923 (M4.0)1843 (M6.2)

1976 (M5.0)1976 (M4.5)

1811 (M7.7)

1923 (M4.0)1924 (M4.6)1880 (M4.0)2001 (M4.3)

1982 (M4.5)1982 (M4.1)

1969 (M4.5)

1974 (M4.0)

1911 (M4.7)

1939 (M4.3)

£¤79

£¤65

£¤49

£¤62

£¤49

Wa ln ut Ridge

£¤63

£¤412

1982 (M4.0)

£¤278

XW

1918 (M4.2)1918 (M4.5)

2010 (M4.0)

2011 (M4.7)2011 (M4.0)

2011 (M4.3)

1933 (M4.2)

1898 (M4.5)1952 (M4.1)

1947 (M4.2)

1878 (M5.0)

1938 (M4.8)1923 (M5.8)1865 (M4.7)

1811 (M6.8)

1919 (M4.0)

1883 (M4.2)

1974 (M4.2)

1930 (M4.2)

1977 (M4.0)

1811 (M7.0)

1843 (M4.2)

1811 (M5.8)1811 (M4.7)

1927 (M4.8)

£¤62£¤65

£¤63

£¤79

£¤49£¤165

§̈¦430 §̈¦440§̈¦630

£¤70

£¤71

£¤278

£¤82

£¤82

£¤82

£¤167

£¤371

£¤63

£¤425 £¤65

1965 (M5.3)

(Note: 49 Eventsat this location)(Note: 102 Eventsfrom 1.6 to 2.5 Magat this location)

Y ell Coun tyWhite Coun ty

U n ion Coun ty

Polk Coun ty

Scott Coun ty

Cla rk Coun ty

Pope Coun ty

Ashley Coun ty

Drew Coun ty

Arka n sa s Coun ty

Ben ton Coun ty

Desha Coun ty

L ee Coun ty

Jefferson Coun ty

Newton Coun ty

L on oke Coun ty

Pula ski Coun ty

L oga n Coun ty

Cla y Coun ty

Sa lin e Coun ty

Ma dison Coun ty

Pike Coun ty

MississippiCoun ty

Wa shin gton Coun ty

Chicot Coun ty

Poin sett Coun ty

Phillips Coun ty

Da lla s Coun ty

Miller Coun ty

Pra irie Coun ty

Gra n t Coun ty

Sea rcy Coun ty

Cross Coun ty

Ga rla n d Coun ty

Iza rd Coun ty

Ston e Coun ty

Colum bia Coun ty

Sha rp Coun ty

Oua chita Coun ty

Ca rroll Coun ty Fulton Coun ty

Ma rion Coun ty

Perry Coun ty

Boon e Coun ty

Bra dleyCoun ty

Sevier Coun ty

John son Coun ty

Neva da Coun ty

Ba xter Coun ty

Mon roeCoun ty

Ja ckson Coun ty

Cra ighea dCoun ty

Mon tgom ery Coun ty

Fa ulkn er Coun ty

Green e Coun ty

Hem pstea dCoun ty

Va n Buren Coun ty

Ca lhoun Coun ty

L in colnCoun ty

Ra n dolph Coun ty

Con wa y Coun ty

In depen den ce Coun ty

Cra wford Coun ty Cleburn e Coun ty

St. Fra n cis Coun ty

L a wren ce Coun ty

Clevela n dCoun ty

Hot Sprin g Coun ty

L ittle RiverCoun ty

Howa rdCoun ty

Fra n klinCoun ty

WoodruffCoun ty

Critten denCoun ty

L a fa yetteCoun ty

Seba stia nCoun ty

L ittle Rock

Jon esboro

Fort Sm ith

Con wa y

Fa yetteville

Pin e Bluff

T exa rka n a

Hot Sprin gs

West Mem phis

El Dora do

Ha rrison

Ba tesville

Mon ticello

Helen a -WestHelen a

Poca hon ta s

Arka delphia

Ma rkedT ree

£¤167

£¤278

£¤63

£¤270

£¤425

£¤70

£¤67£¤371

£¤165

£¤71

£¤79

£¤62

£¤64

£¤412

£¤82

£¤65

£¤61

£¤67

£¤167

£¤64

£¤82

£¤167

£¤270

£¤278

£¤270

£¤67

£¤79

£¤278

£¤71

£¤49

£¤62

£¤71

£¤270

£¤64

£¤63

£¤70

£¤165

£¤71

£¤62

£¤278

£¤425

£¤49£¤70

£¤67

£¤63

£¤62

£¤412

£¤79

£¤67

£¤71

£¤65

£¤70

T h ree Cen turies of Ea rth qua kes In Arka n sa sFrom 1699 th rough 2019GH-EQ-ARK-001Arka n sa s Geologica l SurveyBekki White, Director a n d Sta te Geologist

Scott M. AusbrooksDa vid H. John ston2011Revised Da te: Sca le: Digita l com pila tion :

1 : 500,000 Jerry W. Cla rk02 July 2020(N

Ackn owledgm en tsWe exten d our a pprecia tion to John Da vid McFa rla n d III for com pilin g the origin a l ea rthqua ke da ta ba se used to m a ke this m a p a n d for sha rin g his kn owledge of Arka n sa s Seism icity. We a lso tha n k Buddy Schweig, U SGS a n d Cen ter for Ea rthqua ke Resea rch a n d In form a tion (CERI) a t the U n iversity of Mem phis a n d Russell Wheeler for their a dvice rega rdin g the ea rthqua ke da ta ba se.

Although this m a p wa s com piled from digita l da ta tha t wa s successfully processed on a com puter system usin g ESRI ArcGIS 10.x softwa re a t the Arka n sa s Geologica l Survey (AGS), n o wa rra n ty, expressed or im plied, is m a de by the AGS rega rdin g the un ity of the da ta on a n y other system , n or sha ll the a ct of distribution con stitute a n y such wa rra n ty. T he AGS does n ot gua ra n tee this m a p or digita l da ta to be free of errors or a ssum e lia bility for in terpreta tion s from this m a p or digita l da ta , or decision s ba sed thereon . T he views a n d con clusion s con ta in ed in this docum en t a re those of the a uthors a n d should n ot be in terpreted a s n ecessa rily represen tin g the officia l policies, either expressed or im plied, of the Arka n sa s Geologica l Survey.

Discla im er

Referen cesAdva n ced Na tion a l Seism ic System (ANSS) ea rthqua ke da ta ba se web pa ge: U RL : http://ea rthqua ke.usgs.gov/m on itorin g/a n ss/ Arka n sa s Ga zette n ewspa per (Cea sed publica tion in 1991). Ba kun , W.H. a n d R.C. Hopper, 2004, Ca ta log of sign ifica n t historica l ea rthqua kes in the Cen tra l U n ited Sta tes: U .S. Geologica l Survey Open -File Report 2004-1086, 142 p. Bra n n er, G.C., a n d J.M. Ha n sell, 1937, Ea rthqua ke risk s in Arka n sa s: Arka n sa s Geologica l Survey (AGS) In form a tion Circula r 4, 16 p, 1 pla te. Cen ter for Ea rthqua ke Rese a rch a n d In form a tion (CERI) - New Ma drid Ea rthqua ke Ca ta log: U RL : http://folk worm .ceri.m em phis.edu/ca ta logs/htm l/ca t_n m .htm l Cox, R. T ., 1991, Possible triggerin g of ea rthqua kes by un dergroun d wa ste disposa l in the El Dora do, Arka n sa s a rea : Seism ologica l Resea rch L etters, V. 62, N. 2, p.113-122. Ha a r, L . C., J.B. Fletcher, a n d C.S. Mueller, 1984, T he 1982 En ola , Arka n sa s swa rm a n d sca lin g of groun d m otion in the ea stern U n ited Sta tes: Bulletin of the Seism ologica l Society of Am erica V. 74, N. 6, p. 2463-2482.

Ja ckson , K.C., 1979, Ea rthqua kes a n d ea rthqua ke history of A rka n sa s, Arka n sa s Geologica l Com m ission ( AGC) In form a tion Circula r 26, 70 p. John ston 1, A.C. a n d E.S. Schweig, 1996, T he en igm a of the New Ma drid ea rthqua kes of 1811-1812, An n ua l Review of Ea rth a n d Pla n eta ry Scien ces, p. 339-394. John ston 2, A.C. a n d A. Metzger, 1982, T EIC Specia l Report # 8: T he cen tra l Arka n sa s ea rthqua ke swa rm pa rts 1 & 2 , T en n essee Ea rthqua ke In form a tion Cen ter. Metzger, A., ora l com m un ica tion s with John Da vid McFa rla n d, 1989, Cen ter for Ea rthqua ke Resea rch a n d In form a tion (CERI), U n iversity of Mem phis. Na tion a l Cen ter for Ea rthqua ke En gin eerin g Resea rch (NCEER) – ea rthqua ke ca ta log for the cen tra l a n d ea stern U n ited Sta tes, 1627-1985. U RL : http://folkworm .ceri.m em phis.edu/ca ta logs/htm l/ca t_n ceer.htm l Na tion a l Ea rthqua ke In form a tion Cen ter (NEIC) – Prelim in a ry Determ in a tion of Epicen ters (PDE) ea rthqua ke ca ta log for M2.5 a n d grea ter U .S. ea rthqua kes a n d M4.5 a n d grea ter Worldwide ea rthqua kes. U RL : http://ea rthqua ke.usgs.gov/ea rth qua kes/eqa rchives/epic/

Nuttli, O.W., 1979, T he seism icity of the cen tra l U n ited Sta tes, in geology in the sitin g of n uclea r power pla n ts: Geologica l Society of Am erica , Reviews in En gin eerin g Geology, Volum e 4, p. 67-93. Okla hom a Geologica l Survey (OGS) U RL : http://www.ogs.ou.edu/hom epa ge.php St. L ouis U n iversity (SL U ) Ea rthqua ke Cen ter web pa ge: U RL : http://www.ea s. slu.edu/eqc/ Stover, C.W., B.G. Rea gor, a n d S.T . Algerm issen , 1979, Seism icity m a p of the sta te of Arka n sa s: U SGS Ma p MF-1154, 1 m a p. T en n essee Ea rthqua ke In form a tion Cen ter (T EIC) – succeeded by U n iversity of Mem phis Cen ter for Ea rthqua ke Resea rch a n d In form a tion (CERI) – ta ken from CERI New Ma drid Ea rthqua ke Ca ta log . U RL : http://www.ceri.m em phis.edu/seism ic/ca ta logs/ca t_n m .htm l U n ited S ta tes Geologica l Su rvey U SGS) Ea rthqua ke Notifica tion Service (ENS). T he ba sem a p wa s a cquired a t the Spa tia l An a lysis L a bora tory, U n iversity of Arka n sa s a t Mon ticello. T he fea ture cla ss da ta wa s a cquired a t http://www.geostor. a rka n sa s.gov

10 0 10 20 30 40 505Miles

10 0 10 20 30 40 505Kilom eters

Sca le:

About the Ma p

Ea rthqua keMa gn itudesk 0.0 - 1.9

2.0 - 2.93.0 - 3.94.0 - 4.95.0 - 5.96.0 - 6.97.0 - 7.9Proba ble Site a t which1699 ea rthqua ke wa s felt.XW

Sym bolsU S Highwa ysIn tersta te Highwa ysIn corpora ted Area s

£¤202

§̈¦40

T his m a p illustra tes the loca tion a n d m a gn itude of reported ea rthqua kes tha t ha ve occurred in Arka n sa s from 1699 to 2019. T he da ta source for the ea rthqua kes depicted on this m a p wa s derived from the Arka n sa s Geologica l Survey (AGS) ea rthqua ke ca ta log. T his ca ta log ha s been com piled from va rious sources a n d publica tion s a n d in cludes da te, tim e, la titude, lo n gitude, m a gn itude or in ten sity a n d depth in form a tion . Som e even t records m a y con ta in in com plete da ta due to their da te a n d/or source. T he AGS ea rthqua ke ca ta log is dyn a m ic a n d con tin ua lly upda ted a s even t pa ra m eters a re m odified, n ew even ts a re a dded a n d occa sion a lly even ts a re deleted.