diff --git a/src/array/binary/array.rs b/src/array/binary/array.rs
index 51d8eb6d..bd7f5b42 100644
--- a/src/array/binary/array.rs
+++ b/src/array/binary/array.rs
@@ -59,7 +59,7 @@ impl<'a, O: OffsetSizeTrait> GeometryArrayTrait<'a> for WKBArray<O> {
         let mut metadata = HashMap::new();
         metadata.insert(
             "ARROW:extension:name".to_string(),
-            "geoarrow.wkb".to_string(),
+            self.extension_name().to_string(),
         );
         Arc::new(Field::new("geometry", self.storage_type(), true).with_metadata(metadata))
     }
diff --git a/src/array/geometrycollection/array.rs b/src/array/geometrycollection/array.rs
index aba46c7b..c96f1f15 100644
--- a/src/array/geometrycollection/array.rs
+++ b/src/array/geometrycollection/array.rs
@@ -78,7 +78,7 @@ impl<'a, O: OffsetSizeTrait> GeometryArrayTrait<'a> for GeometryCollectionArray<
         let mut metadata = HashMap::new();
         metadata.insert(
             "ARROW:extension:name".to_string(),
-            "geoarrow.geometrycollection".to_string(),
+            self.extension_name().to_string(),
         );
         Arc::new(Field::new("geometry", self.storage_type(), true).with_metadata(metadata))
     }
diff --git a/src/array/linestring/array.rs b/src/array/linestring/array.rs
index 0a2601b5..af5b1580 100644
--- a/src/array/linestring/array.rs
+++ b/src/array/linestring/array.rs
@@ -128,7 +128,7 @@ impl<'a, O: OffsetSizeTrait> GeometryArrayTrait<'a> for LineStringArray<O> {
         let mut field_metadata = HashMap::new();
         field_metadata.insert(
             "ARROW:extension:name".to_string(),
-            "geoarrow.linestring".to_string(),
+            self.extension_name().to_string(),
         );
         Arc::new(Field::new("", self.storage_type(), true).with_metadata(field_metadata))
     }
diff --git a/src/array/mixed/array.rs b/src/array/mixed/array.rs
index 43a63c2a..cbbb829b 100644
--- a/src/array/mixed/array.rs
+++ b/src/array/mixed/array.rs
@@ -229,7 +229,7 @@ impl<'a, O: OffsetSizeTrait> GeometryArrayTrait<'a> for MixedGeometryArray<O> {
         let mut metadata = HashMap::new();
         metadata.insert(
             "ARROW:extension:name".to_string(),
-            "geoarrow.mixed".to_string(),
+            self.extension_name().to_string(),
         );
         Arc::new(Field::new("geometry", self.storage_type(), true).with_metadata(metadata))
     }
diff --git a/src/array/multilinestring/array.rs b/src/array/multilinestring/array.rs
index 1f67ac6d..c4097c1e 100644
--- a/src/array/multilinestring/array.rs
+++ b/src/array/multilinestring/array.rs
@@ -163,7 +163,7 @@ impl<'a, O: OffsetSizeTrait> GeometryArrayTrait<'a> for MultiLineStringArray<O>
         let mut metadata = HashMap::new();
         metadata.insert(
             "ARROW:extension:name".to_string(),
-            "geoarrow.multilinestring".to_string(),
+            self.extension_name().to_string(),
         );
         Arc::new(Field::new("geometry", self.storage_type(), true).with_metadata(metadata))
     }
diff --git a/src/array/multipoint/array.rs b/src/array/multipoint/array.rs
index 10cdde89..7062dbe1 100644
--- a/src/array/multipoint/array.rs
+++ b/src/array/multipoint/array.rs
@@ -127,7 +127,7 @@ impl<'a, O: OffsetSizeTrait> GeometryArrayTrait<'a> for MultiPointArray<O> {
         let mut metadata = HashMap::new();
         metadata.insert(
             "ARROW:extension:name".to_string(),
-            "geoarrow.multipoint".to_string(),
+            self.extension_name().to_string(),
         );
         Arc::new(Field::new("geometry", self.storage_type(), true).with_metadata(metadata))
     }
diff --git a/src/array/multipolygon/array.rs b/src/array/multipolygon/array.rs
index c772bfb6..1e4bc5a1 100644
--- a/src/array/multipolygon/array.rs
+++ b/src/array/multipolygon/array.rs
@@ -195,7 +195,7 @@ impl<'a, O: OffsetSizeTrait> GeometryArrayTrait<'a> for MultiPolygonArray<O> {
         let mut metadata = HashMap::new();
         metadata.insert(
             "ARROW:extension:name".to_string(),
-            "geoarrow.multipolygon".to_string(),
+            self.extension_name().to_string(),
         );
         Arc::new(Field::new("geometry", self.storage_type(), true).with_metadata(metadata))
     }
diff --git a/src/array/point/array.rs b/src/array/point/array.rs
index fb04b98f..a551b2c1 100644
--- a/src/array/point/array.rs
+++ b/src/array/point/array.rs
@@ -92,7 +92,7 @@ impl<'a> GeometryArrayTrait<'a> for PointArray {
         let mut metadata = HashMap::new();
         metadata.insert(
             "ARROW:extension:name".to_string(),
-            "geoarrow.point".to_string(),
+            self.extension_name().to_string(),
         );
         Arc::new(Field::new("geometry", self.storage_type(), true).with_metadata(metadata))
     }
diff --git a/src/array/polygon/array.rs b/src/array/polygon/array.rs
index f065f410..f968af5c 100644
--- a/src/array/polygon/array.rs
+++ b/src/array/polygon/array.rs
@@ -163,7 +163,7 @@ impl<'a, O: OffsetSizeTrait> GeometryArrayTrait<'a> for PolygonArray<O> {
         let mut metadata = HashMap::new();
         metadata.insert(
             "ARROW:extension:name".to_string(),
-            "geoarrow.polygon".to_string(),
+            self.extension_name().to_string(),
         );
         Arc::new(Field::new("geometry", self.storage_type(), true).with_metadata(metadata))
     }
diff --git a/src/array/rect/array.rs b/src/array/rect/array.rs
index 17ad3345..16f8fe39 100644
--- a/src/array/rect/array.rs
+++ b/src/array/rect/array.rs
@@ -50,7 +50,7 @@ impl<'a> GeometryArrayTrait<'a> for RectArray {
         let mut metadata = HashMap::new();
         metadata.insert(
             "ARROW:extension:name".to_string(),
-            "geoarrow._rect".to_string(),
+            self.extension_name().to_string(),
         );
         Arc::new(Field::new("geometry", self.storage_type(), true).with_metadata(metadata))
     }
@@ -58,6 +58,7 @@ impl<'a> GeometryArrayTrait<'a> for RectArray {
     fn extension_name(&self) -> &str {
         "geoarrow._rect"
     }
+
     fn into_arrow(self) -> Self::ArrowArray {
         let inner_field = self.inner_field();
         let validity = self.validity;