-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/131" version="1.3.1">
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 <xsd:include schemaLocation="cs_lithology.xsd"/>
 <xsd:include schemaLocation="cs_show.xsd"/>
 <xsd:include schemaLocation="cs_chromatograph.xsd"/>
 <xsd:include schemaLocation="cs_mudGas.xsd"/>
 <xsd:include schemaLocation="attgrp_uid.xsd"/>
<!--
 -->
-<xsd:complexType name="cs_geologyInterval">
-<xsd:annotation>
 <xsd:documentation>WITSML - Geology Interval Component Schema</xsd:documentation>
 </xsd:annotation>
-<xsd:sequence>
-<xsd:element name="typeLithology" type="witsml:LithologySource" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The type of lithology declaration. An interpreted type will specify one lithology for the whole interval (i.e., the percentage is 100%). A cuttings or core type may specify one or more lithologies for the interval based on a visual inspection of the cuttings or core and a relative percentage will be assigned to each lithology.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mdTop" type="witsml:measuredDepthCoord" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Measured depth at top of interval.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mdBottom" type="witsml:measuredDepthCoord" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Measured depth at base of interval. A point interval should be indicated by setting mdTop=mdBottom.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dTim" type="witsml:timestamp" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Date and time the information is related to. The time refers to the top of the interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tvdTop" type="witsml:wellVerticalDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>True vertical depth at top of the section. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tvdBase" type="witsml:wellVerticalDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>True vertical depth at base of interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="ropAv" type="witsml:velocityMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Average rate of penetration through Interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="ropMn" type="witsml:velocityMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Minimum rate of penetration through Interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="ropMx" type="witsml:velocityMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Maximum rate of penetration through Interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wobAv" type="witsml:forceMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Surface weight on bit - average through interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tqAv" type="witsml:momentOfForceMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Average torque through interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="currentAv" type="witsml:electricCurrentMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Average current through interval. This is the raw measurement from which the average torque could be calculated.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="rpmAv" type="witsml:anglePerTimeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Average turn rate through interval (commonly in rpm). </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wtMudAv" type="witsml:densityMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Average mud density in through interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="ecdTdAv" type="witsml:densityMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Average effective circulating density at TD through Interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dxcAv" type="witsml:unitlessQuantity" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Average drilling exponent through Interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="lithology" type="witsml:cs_lithology" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Set of lithology records for the Interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="show" type="witsml:cs_show" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Show record through the Interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="chromatograph" type="witsml:cs_chromatograph" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Chromatographic break down for the interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mudGas" type="witsml:cs_mudGas" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Total gas readings associated with this interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="densBulk" type="witsml:densityMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Sample bulk density for the interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="densShale" type="witsml:densityMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Shale density for the interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="calcite" type="witsml:volumePerVolumeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Calcimetry calcite percentage. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dolomite" type="witsml:volumePerVolumeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Calcimetry dolomite percentage. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="cec" type="witsml:equivalentPerMassMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Cuttings cationic exchange capacity. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="qft" type="witsml:illuminanceMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Fluorescence as measured using a device licensed for the Quantitative Fluorescence Technique.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="calcStab" type="witsml:volumePerVolumeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Calcimetry stabilized percentage. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="nameFormation" type="witsml:nameString" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Name of formation penetrated. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="lithostratigraphic" type="witsml:nameString" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Name of formation, regionally dependent. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="chronostratigraphic" type="witsml:nameString" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Chronostratigraphic classification. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="sizeMn" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Minimum size. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="sizeMx" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Maximum size. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="lenPlug" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Plug length. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="description" type="witsml:commentString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Description of item and details. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="cuttingFluid" type="witsml:str32" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Sample treatment : cutting fluid. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="cleaningMethod" type="witsml:str32" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Sample treatment : cleaning method. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dryingMethod" type="witsml:str32" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Sample treatment : drying method. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="comments" type="witsml:commentString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Comments and remarks. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
 </xsd:sequence>
-<xsd:attributeGroup ref="witsml:attgrp_uid">
-<xsd:annotation>
 <xsd:documentation>Unique identifier for the geology interval.</xsd:documentation>
 </xsd:annotation>
 </xsd:attributeGroup>
 </xsd:complexType>
 </xsd:schema>