Paleontological Resources Assessment Report
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RTD-Earthquake-Fact
The California Water Fix Delta Tunnels don’t eliminate earthquake threats to water supply. Earthquake risk mythmaking serves water exporters’ interests. Water exporters misrepresent the risk of earthquakes to generate support for the Delta Tunnels. Fattening the levees is a more effective solution. Californians should work together to build a more seismically resistant Delta that will protect water exports, other critical infrastructure, and save lives -- all at a lower cost than the CA Water Fix. Developing regional water supplies provides a more reliable water supply. The best way to prevent earthquake disruption is to invest in local water solutions, including increased comprehensive water conservation and technology, maximizing wastewater reuse and groundwater recharge, while capturing storm water and rainwater, graywater, and fixing local leaky pipes. Cleaning up local aquifers and providing local jobs for local water makes economic sense. Rather than a huge investment in faraway tunnels let's instead make the levees in the Delta more resilient and prepare all California communities to be less reliant on imported water. MYTH #1: The Delta tunnels will protect California’s water supply from earthquakes. FACT: Earthquakes would hit the existing water transfer conveyance in other parts of California harder than they would hit the Delta. The earthquake threat to the Delta is minimal. The Hayward Fault is 40 miles from the Delta’s center. But the State Water Project (SWP) and federal Central Valley Project (CVP) cross right over high-risk fault areas, from Coalinga south to LA, including the San Andreas Fault. Cement canals in the southern part of the state are more vulnerable to earthquakes than Delta levees. -
David K. Clark, PE
AFC15 David K. Clark, PE THE METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA LAKE SHASTA LAKE OROVILLE Bay-Delta LOS ANGELES AQUEDUCTS (City of Los Angeles) COLORADO CALIFORNIA RIVER AQUEDUCT AQUEDUCT (State of Calif.) (Metropolitan) LOCAL SUPPLIES, RECYCLING, GROUNDWATER & CONSERVATION Background Seismic Preparedness Seismic upgrade of facilities Seismic vulnerability assessments Emergency response Collaboration with External Agencies Conclusions 1.7 billion gallons/day average 6 counties, 18 million residents Comprised of 26 member public agencies Imports Colorado River & State Water Project supplies Operates 5 water treatment & 16 hydroelectric plants Maintains 830 miles of pipeline & 9 reservoirs Biennial budget for FY 2014-16 is approximately $3 billion Comprehensive Reliability Strategy Water System InfrastructureInfrastructure System EmergencyEmergency Supply Capacity ReliabilityReliability FlexibilityFlexibility ResponseResponse Seismic Preparedness 1. Seismic Upgrade of Facilities 2. Vulnerability Assessments 3. Emergency Response 4. Collaboration w/External Agencies Scope: Buildings & Structures Dams & Reservoirs Geotechnical Hazards Drivers: Code Changes Increased Knowledge Approach: Re-assess as necessary Upgrade as required Use latest codes Use site-specific data Expect same performance as for new facilities Example of Code Changes (Weymouth Water Treatment Plant) Year Design Peak Ground Acceleration (PGA) UBC 1933 0.1g UBC 1958 0.1g* UBC 1991 0.4g IBC 2009 0.52g IBC 2012 0.71g *Estimated value, PGA was not specifically -
Two Stages of Late Carboniferous to Triassic Magmatism in the Strandja
Geological Magazine Two stages of Late Carboniferous to Triassic www.cambridge.org/geo magmatism in the Strandja Zone of Bulgaria and Turkey ł ń 1,2 3 1 1 Original Article Anna Sa aci ska , Ianko Gerdjikov , Ashley Gumsley , Krzysztof Szopa , David Chew4, Aleksandra Gawęda1 and Izabela Kocjan2 Cite this article: Sałacińska A, Gerdjikov I, Gumsley A, Szopa K, Chew D, Gawęda A, and 1Institute of Earth Sciences, Faculty of Natural Sciences, University of Silesia in Katowice, Będzińska 60, 41-200 Kocjan I. Two stages of Late Carboniferous to 2 3 Triassic magmatism in the Strandja Zone of Sosnowiec, Poland; Institute of Geological Sciences, Polish Academy of Sciences, Warsaw, Poland; Faculty of ‘ ’ Bulgaria and Turkey. Geological Magazine Geology and Geography, Sofia University St. Kliment Ohridski , 15 Tzar Osvoboditel Blvd., 1504 Sofia, Bulgaria 4 https://doi.org/10.1017/S0016756821000650 and Department of Geology, School of Natural Sciences, Trinity College Dublin, Dublin, Ireland Received: 9 February 2021 Abstract Revised: 3 June 2021 Accepted: 8 June 2021 Although Variscan terranes have been documented from the Balkans to the Caucasus, the southeastern portion of the Variscan Belt is not well understood. The Strandja Zone along Keywords: the border between Bulgaria and Turkey encompasses one such terrane linking the Strandja Zone; Sakar unit; U–Pb zircon dating; Izvorovo Pluton Balkanides and the Pontides. However, the evolution of this terrane, and the Late Carboniferous to Triassic granitoids within it, is poorly resolved. Here we present laser ablation Author for correspondence: – inductively coupled plasma – mass spectrometry (LA-ICP-MS) U–Pb zircon ages, coupled ł ń Anna Sa aci ska, with petrography and geochemistry from the Izvorovo Pluton within the Sakar Unit Email: [email protected] (Strandja Zone). -
The Geologic Time Scale Is the Eon
Exploring Geologic Time Poster Illustrated Teacher's Guide #35-1145 Paper #35-1146 Laminated Background Geologic Time Scale Basics The history of the Earth covers a vast expanse of time, so scientists divide it into smaller sections that are associ- ated with particular events that have occurred in the past.The approximate time range of each time span is shown on the poster.The largest time span of the geologic time scale is the eon. It is an indefinitely long period of time that contains at least two eras. Geologic time is divided into two eons.The more ancient eon is called the Precambrian, and the more recent is the Phanerozoic. Each eon is subdivided into smaller spans called eras.The Precambrian eon is divided from most ancient into the Hadean era, Archean era, and Proterozoic era. See Figure 1. Precambrian Eon Proterozoic Era 2500 - 550 million years ago Archaean Era 3800 - 2500 million years ago Hadean Era 4600 - 3800 million years ago Figure 1. Eras of the Precambrian Eon Single-celled and simple multicelled organisms first developed during the Precambrian eon. There are many fos- sils from this time because the sea-dwelling creatures were trapped in sediments and preserved. The Phanerozoic eon is subdivided into three eras – the Paleozoic era, Mesozoic era, and Cenozoic era. An era is often divided into several smaller time spans called periods. For example, the Paleozoic era is divided into the Cambrian, Ordovician, Silurian, Devonian, Carboniferous,and Permian periods. Paleozoic Era Permian Period 300 - 250 million years ago Carboniferous Period 350 - 300 million years ago Devonian Period 400 - 350 million years ago Silurian Period 450 - 400 million years ago Ordovician Period 500 - 450 million years ago Cambrian Period 550 - 500 million years ago Figure 2. -
Devonian and Carboniferous Stratigraphical Correlation and Interpretation in the Central North Sea, Quadrants 25 – 44
CR/16/032; Final Last modified: 2016/05/29 11:43 Devonian and Carboniferous stratigraphical correlation and interpretation in the Orcadian area, Central North Sea, Quadrants 7 - 22 Energy and Marine Geoscience Programme Commissioned Report CR/16/032 CR/16/032; Final Last modified: 2016/05/29 11:43 CR/16/032; Final Last modified: 2016/05/29 11:43 BRITISH GEOLOGICAL SURVEY ENERGY AND MARINE GEOSCIENCE PROGRAMME COMMERCIAL REPORT CR/16/032 Devonian and Carboniferous stratigraphical correlation and interpretation in the Orcadian area, Central North Sea, Quadrants 7 - 22 K. Whitbread and T. Kearsey The National Grid and other Ordnance Survey data © Crown Copyright and database rights Contributor 2016. Ordnance Survey Licence No. 100021290 EUL. N. Smith Keywords Report; Stratigraphy, Carboniferous, Devonian, Central North Sea. Bibliographical reference WHITBREAD, K AND KEARSEY, T 2016. Devonian and Carboniferous stratigraphical correlation and interpretation in the Orcadian area, Central North Sea, Quadrants 7 - 22. British Geological Survey Commissioned Report, CR/16/032. 74pp. Copyright in materials derived from the British Geological Survey’s work is owned by the Natural Environment Research Council (NERC) and/or the authority that commissioned the work. You may not copy or adapt this publication without first obtaining permission. Contact the BGS Intellectual Property Rights Section, British Geological Survey, Keyworth, e-mail [email protected]. You may quote extracts of a reasonable length without prior permission, provided a full acknowledgement -
Santa Ana Watershed Project Authority Santa Ana River Conservation and Conjunctive Use Project Decision Support Model (SARCCUP DSM)
Santa Ana Watershed Project Authority Santa Ana River Conservation and Conjunctive Use Project Decision Support Model (SARCCUP DSM) SARCCUP DSM MODEL DOCUMENTATION DRAFT MARCH 2017 Prepared for Prepared by 1. Introduction The Santa Ana Watershed Project Authority (SAWPA) and its five member agencies, Eastern Municipal Water District (EMWD), Inland Empire Utilities Agency (IEUA), Orange County Water District (OCWD), San Bernardino Valley Municipal Water District (SBVMWD), and Western Municipal Water District (WMWD), collectively “Agencies” in this memorandum, are developing and implementing the Santa Ana River Conservation and Conjunctive Use Project (SARCCUP). SARCCUP is a collaborative regional program that will improve the water supply resiliency of the Santa Ana River Watershed through development of additional dry year yield, reduced water use, and improved habitat for native threatened species populations. The primary goal of the conjunctive use element is to maximize the development and use of imported water supplies and to conjunctively manage these local and imported water supplies such that the aggregate yield and water supply reliability generated by the SARCCUP is greater than the independent management of these resources. Phase 1 of SARCCUP will develop an 180,000 acre‐foot (AF) groundwater bank storage program with capacity to recharge and store 60,000 acre‐feet per year (AFY) during each of three wet years in a decade and extraction facilities to withdraw 60,000 AFY in each of three dry years in a decade. SARCCUP management will also include the ability to utilize transfers and exchanges of other water supplies in lieu of recharging and extracting banked groundwater. In support of the future development of a SARCCUP Master Plan for the conjunctive use element, the Agencies have engaged the CH2M team to develop a Santa Ana River watershed‐wide decision support model (DSM) to optimize the conjunctive use element of SARCCUP. -
A Fundamental Precambrian–Phanerozoic Shift in Earth's Glacial
Tectonophysics 375 (2003) 353–385 www.elsevier.com/locate/tecto A fundamental Precambrian–Phanerozoic shift in earth’s glacial style? D.A.D. Evans* Department of Geology and Geophysics, Yale University, P.O. Box 208109, 210 Whitney Avenue, New Haven, CT 06520-8109, USA Received 24 May 2002; received in revised form 25 March 2003; accepted 5 June 2003 Abstract It has recently been found that Neoproterozoic glaciogenic sediments were deposited mainly at low paleolatitudes, in marked qualitative contrast to their Pleistocene counterparts. Several competing models vie for explanation of this unusual paleoclimatic record, most notably the high-obliquity hypothesis and varying degrees of the snowball Earth scenario. The present study quantitatively compiles the global distributions of Miocene–Pleistocene glaciogenic deposits and paleomagnetically derived paleolatitudes for Late Devonian–Permian, Ordovician–Silurian, Neoproterozoic, and Paleoproterozoic glaciogenic rocks. Whereas high depositional latitudes dominate all Phanerozoic ice ages, exclusively low paleolatitudes characterize both of the major Precambrian glacial epochs. Transition between these modes occurred within a 100-My interval, precisely coeval with the Neoproterozoic–Cambrian ‘‘explosion’’ of metazoan diversity. Glaciation is much more common since 750 Ma than in the preceding sedimentary record, an observation that cannot be ascribed merely to preservation. These patterns suggest an overall cooling of Earth’s longterm climate, superimposed by developing regulatory feedbacks -
223± Acres of Land in Diamond Valley Lake 12-Parcels, Riverside County
LAND FOR SALE DIAMOND VALLEY LAKE 12 PARCELS City of Hemet and 223± ACRES, 12 PARCELS Riverside County, California The Seller makes no representations or warranties Aerial Drone Video: https://www.youtube.com/watch? as to the potential use or fitness of this property for development and the accuracy of the information v=rE4bkV0MARA&feature=youtu.be provided. Interested parties should make their own inquiries and investigations to confirm property information. Terms of sale and availability are For Listing Information, please contact: Phyvin Mok subject to change or withdrawal without notice. Real Property Group, Acquisition and Disposition Team (213) 217-6111 | [email protected] THE METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA DIAMOND VALLEY LAKE 12 PARCELS LAND FOR SALE City of Hemet and 223± ACRES, 12 PARCELS Riverside County, California TABLE OF CONTENTS 1. Listing Summary 2. Riverside County Assessor Parcel Numbers 3. Property Information 4. Area Information 5. Area Map 6. Location Map THE METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA DIAMOND VALLEY LAKE 12 PARCELS LAND FOR SALE City of Hemet and 223± ACRES, 12 PARCELS Riverside County, California LISTING SUMMARY Property: Diamond Valley Lake 12-Parcels Total Lot Size: Total 223± acres; The subject property is comprised of five disparate groups of assessor’s parcels, each group within an approximately three-mile-wide radius, in an area to the northwest of Diamond Valley Lake, in unincorporated Riverside County (Group 1 through 4), and in the City of Hemet (Group 5), California Listing Price: NEGOTIABLE Terms: All Cash at Closing, no financing contingency Property Condition: The Property is being offered AS-IS, WHERE IS, WITH ALL FAULTS Zoning: Zoning information provided herein is for informational purposes only. -
Carboniferous Rainforest Collapse
Carboniferous Rainforest Collapse GEOL 204 The Fossil Record Spring 2020 Section 0103 Fossil Sites of Carboniferous Rainforest April Conway, John Howley, Collapse: Hamilton, USA, Jarrow, UK, Linton, USA, Olivia Medina, and Drew Tidwell Newsham, USA, Nyrany, Czechoslovakia, Joggins, Canada (Joggins, Canada site shown in figure 2) What was the Carboniferous Rainforest Collapse? The Carboniferous Rainforest Collapse was a minor extinction that happened 305 Ma (Late Moscovian to early Pennsylvanian). It was originally a rainforest home Extinction Patterns on Land to many tetrapods and plants. The rainforest was also very good for the production Plants decreased in diversity which in turn caused a decrease of coal. (Figure 1). in the oxygen levels . This affected the large arthropods and other invertebrates which could not maintain their size with these decreased levels of oxygen. This caused them to be What caused the Carboniferous Rainforest Collapse? wiped out during the collapse, especially giant dragonflies. Animals were also drastically affected because of the lack of Originally in the Moscovian the climate was hot and wet which is perfect for the growth of an available resources for survival and were forced to adapt ecosystem in a rainforest. Eventually, the climate changed to cool and dry which caused the living quickly to their new limited surroundings. organisms and plants in the rainforest to struggle. As the plants continued to struggle, the oxygen levels decreased which made life for living organisms even more difficult. Another possible cause of the minor extinction was intense glaciation which led to lower sea levels. This is also related to the issues that arose from a colder climate. -
Late Devonian and Early Carboniferous Chondrichthyans from the Fairfield Group, Canning Basin, Western Australia
Palaeontologia Electronica palaeo-electronica.org Late Devonian and Early Carboniferous chondrichthyans from the Fairfield Group, Canning Basin, Western Australia Brett Roelofs, Milo Barham, Arthur J. Mory, and Kate Trinajstic ABSTRACT Teeth from 18 shark taxa are described from Upper Devonian to Lower Carbonif- erous strata of the Lennard Shelf, Canning Basin, Western Australia. Spot samples from shoal facies in the upper Famennian Gumhole Formation and shallow water car- bonate platform facies in the Tournaisian Laurel Formation yielded a chondrichthyan fauna including several known species, in particular Thrinacodus ferox, Cladodus thomasi, Protacrodus aequalis and Deihim mansureae. In addition, protacrodont teeth were recovered that resemble formally described, yet unnamed, teeth from Tournaisian deposits in North Gondwanan terranes. The close faunal relationships previously seen for Late Devonian chondrichthyan taxa in the Canning Basin and the margins of north- ern Gondwana are shown here to continue into the Carboniferous. However, a reduc- tion in species overlap for Tournaisian shallow water microvertebrate faunas between the Canning Basin and South China is evident, which supports previous studies docu- menting a separation of faunal and terrestrial plant communities between these regions by this time. The chondrichthyan fauna described herein is dominated by crushing type teeth similar to the shallow water chondrichthyan biofacies established for the Famennian and suggests some of these biofacies also extended into the Early Carboniferous. Brett Roelofs. Department of Applied Geology, Curtin University, GPO Box U1987 Perth, WA 6845, Australia. [email protected] Milo Barham. Department of Applied Geology, Curtin University, GPO Box U1987 Perth, WA 6845, Australia. [email protected] Arthur J. -
4.5K 4.5 2.0 250 810K 264B
DIAMOND VALLEY LAKE SOUTHERN CALIFORNIA’S LARGEST RESERVOIR Diamond Valley Lake is known for its fishing, hiking and biking trails and seasonal wildflower blooms. It is considered to be one of the top destinations in the west for bass fishing, and has a new, improved marina for recreational visitors. DVL NUMBERS Diamond Valley Lake, located in southwest Riverside County, 90 miles southeast from Los Angeles, began operation March 18, 2000 and is Southern California’s largest drinking water reservoir. It has a surface area of 4,500 acres and is 4.5 miles long and about 2 miles wide with a depth up to 250 feet. DVL holds nearly twice as much water as all other 4.5K acre surface area Southern California’s surface reservoirs combined. With a capacity of 810,000 acre-feet, or nearly 264 billion gallons, DVL was designed to meet the region’s emergency and drought needs for six months. It is critical to Metropolitan’s water supply reliability and operational 4.5 flexibility. The reservoir cost $1.9 billion to construct. miles long Water stored in DVL travels from Northern California through the State Water Project 2.0 and its 444-mile California Aqueduct before being delivered to the reservoir through miles wide the Inland Feeder and the Eastside Pipeline. Stored water can be routed to almost all of Metropolitan’s service area, as far west as Ventura County, if needed during a drought or an emergency. 250 feet deep 810K acre-foot capacity 264B gallon capacity THE METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA June 2019 ENVIRONMENT South of DVL is the nearly 14,000-acre Southwestern Riverside County Multi-Species Reserve, created in partnership with Metropolitan. -
Coevolution of Global Brachiopod Palaeobiogeography and Tectonopalaeogeography During the Carboniferous Ning Li1,2*, Cheng-Wen Wang1, Pu Zong3 and Yong-Qin Mao4
Li et al. Journal of Palaeogeography (2021) 10:18 https://doi.org/10.1186/s42501-021-00095-z Journal of Palaeogeography ORIGINAL ARTICLE Open Access Coevolution of global brachiopod palaeobiogeography and tectonopalaeogeography during the Carboniferous Ning Li1,2*, Cheng-Wen Wang1, Pu Zong3 and Yong-Qin Mao4 Abstract The global brachiopod palaeobiogeography of the Mississippian is divided into three realms, six regions, and eight provinces, while that of the Pennsylvanian is divided into three realms, six regions, and nine provinces. On this basis, we examined coevolutionary relationships between brachiopod palaeobiogeography and tectonopalaeogeography using a comparative approach spanning the Carboniferous. The appearance of the Boreal Realm in the Mississippian was closely related to movements of the northern plates into middle–high latitudes. From the Mississippian to the Pennsylvanian, the palaeobiogeography of Australia transitioned from the Tethys Realm to the Gondwana Realm, which is related to the southward movement of eastern Gondwana from middle to high southern latitudes. The transition of the Yukon–Pechora area from the Tethys Realm to the Boreal Realm was associated with the northward movement of Laurussia, whose northern margin entered middle–high northern latitudes then. The formation of the six palaeobiogeographic regions of Mississippian and Pennsylvanian brachiopods was directly related to “continental barriers”, which resulted in the geographical isolation of each region. The barriers resulted from the configurations of Siberia, Gondwana, and Laurussia, which supported the Boreal, Tethys, and Gondwana realms, respectively. During the late Late Devonian–Early Mississippian, the Rheic seaway closed and North America (from Laurussia) joined with South America and Africa (from Gondwana), such that the function of “continental barriers” was strengthened and the differentiation of eastern and western regions of the Tethys Realm became more distinct.